Agra Fort (World Heritage Monuments), City of Agra, Uttar Pradesh, India.

Agra Fort is a historical fort in the city of Agra in India. It was the main residence of the emperors of the Mughal Dynasty until 1638, when the capital was shifted from Agra to Delhi. Before capture by the British, the last Indian rulers to have occupied it were the Marathas. In 1983, the Agra fort was inscribed as a UNESCO World Heritage site. It is about 2.5 km northwest of its more famous sister monument, the Taj Mahal. The fort can be more accurately described as a walled city.

Like the rest of Agra, the history of Agra Fort prior to Mahmud Ghaznavi's invasion is unclear. However in the 15th Century, the Chauhan Rajputs occupied it. Soon after, Agra assumed the status of capital when Sikandar Lodi (A.D. 1487–1517) shifted his capital from Delhi and constructed a few buildings in the pre-existing Fort at Agra. After the first battle of Panipat (A.D. 1526) Mughals captured the fort and ruled from it. In A.D. 1530, Humayun was crowned in it. The Fort got its present appearance during the reign of Akbar (A.D. 1556–1605).

After the First Battle of Panipat in 1526, Babur stayed in the fort, in the palace of Ibrahim Lodi. He later built a baoli (step well) in it. His successor, Humayun, was crowned in the fort in 1530. He was defeated at Bilgram in 1540 by Sher Shah Suri. The fort remained with the Suris till 1555, when Humayun recaptured it. Adil Shah Suri's general, Hemu, recaptured Agra in 1556 and pursued its fleeing governor to Delhi where he met the Mughals in the Battle of Tughlaqabad.

Realising the importance of its central situation, Akbar made it his capital and arrived in Agra in 1558. His historian, Abul Fazl, recorded that this was a brick fort known as 'Badalgarh'. It was in a ruined condition and Akbar had it rebuilt with red sandstone from Barauli area Dhaulpur district, in Rajasthan. Architects laid the foundation and it was built with bricks in the inner core with sandstone on external surfaces. Some 4,000 builders worked on it daily for eight years, completing it in 1573.

It was only during the reign of Akbar's grandson, Shah Jahan, that the site took on its current state. Shah Jahan built the beautiful Taj Mahal in the memory of his wife, Mumtaz Mahal. Unlike his grandfather, Shah Jahan tended to have buildings made from white marble. He destroyed some of the earlier buildings inside the fort to make his own.

The fort was under the Jat rulers of Bharatpur for 13 Years. In the fort, they built the Ratan Singh ki haveli. The fort was invaded and captured by the Maratha Empire in the early 18th century. Thereafter, it changed hands between the Marathas and their foes many times. After their catastrophic defeat at Third Battle of Panipat by Ahmad Shah Abdali in 1761, Marathas remained out of the region for the next decade. Finally Mahadji Shinde took the fort in 1785. It was lost by the Marathas to the British during the Second Anglo-Maratha War, in 1803. 

The fort was the site of a battle during the Indian rebellion of 1857, which caused the end of the British East India Company's rule in India, and led to a century of direct rule of India by Britain.

The 380,000 m2 (94-acre) fort has a semicircular plan, its chord lies parallel to the river Yamuna and its walls are seventy feet high. Double ramparts have massive circular bastions at intervals, with battlements, embrasures, machicolations and string courses. Four gates were provided on its four sides, one Khizri gate opening on to the river.

Two of the fort's gates are notable: the "Delhi Gate" and the "Lahore Gate." The Lahore Gate is also popularly also known as the "Amar Singh Gate," for Amar Singh Rathore.

The monumental Delhi Gate, which faces the city on the western side of the fort, is considered the grandest of the four gates and a masterpiece of Akbar's time. It was built circa 1568 both to enhance security and as the king's formal gate, and includes features related to both. It is embellished with intricate inlay work in white marble. A wooden drawbridge was used to cross the moat and reach the gate from the mainland; inside, an inner gateway called Hathi Pol ("Elephant Gate") guarded by two life-sized stone elephants with their riders added another layer of security. The drawbridge, slight ascent, and 90-degree turn between the outer and inner gates make the entrance impregnable. During a siege, attackers would employ elephants to crush a fort's gates. Without a level, straight run-up to gather speed, however, that thing is prevented by this layout. Because the Indian military (the Parachute Brigade in particular) is still using the northern portion of the Agra Fort, the Delhi Gate cannot be used by the public. Tourists enter via the Amar Singh Gate.

The site is very important in terms of architectural history. Abul Fazal recorded that five hundred buildings in the beautiful designs of Bengal and Gujarat were built in the fort. Some of them were demolished by Shah Jahan to make way for his white marble palaces. Most of the others were destroyed by the British troops of East India Company between 1803 and 1862 for raising barracks. Hardly thirty Mughal buildings have survived on the south-eastern side, facing the river, such as the Delhi Gate and Akbar Gate and one palace – "Bengali Mahal".

Akbar Darwazza (Akbar Gate) was renamed Amar Singh Gate by Shah Jahan. The gate is similar in design to the Delhi Gate. Both are built of red sandstone. The Bengali Mahal is built of red sandstone and is now split into Akbari Mahal and Jahangiri Mahal.

Grand Central Terminal, 42nd Street and Park Avenue in Midtown Manhattan, New York City

Grand Central Terminal (GCT; also referred to as Grand Central Station[N 2] or simply as Grand Central) is a commuter rail terminal located at 42nd Street and Park Avenue in Midtown Manhattan, New York City. Grand Central is the southern terminus of the Metro-North Railroad's Harlem, Hudson and New Haven Lines, serving the northern parts of the New York metropolitan area. It also contains a connection to the New York City Subway at Grand Central 42nd Street station. The terminal is the third-busiest train station in North America, after New York Penn Station and Toronto Union Station.

The distinctive architecture and interior design of Grand Central Terminal's station house have earned it several landmark designations, including as a National Historic Landmark. Its Beaux-Arts design incorporates numerous works of art. Grand Central Terminal is one of the world's ten most visited tourist attractions, with 21.6 million visitors in 2018, excluding train and subway passengers. The terminal's Main Concourse is often used as a meeting place, and is especially featured in films and television. Grand Central Terminal contains a variety of stores and food vendors, including upscale restaurants and bars, two food halls, and a grocery marketplace.

Grand Central Terminal was built by and named for the New York Central Railroad; it also served the New York, New Haven and Hartford Railroad and, later, successors to the New York Central. Opened in 1913, the terminal was built on the site of two similarly-named predecessor stations, the first of which dates to 1871. Grand Central Terminal served intercity trains until 1991, when Amtrak began routing its trains through nearby Penn Station. The East Side Access project, which will bring Long Island Rail Road service to a new station beneath the terminal, is expected to be completed in late 2022.

 Grand Central covers 48 acres (19 ha) and has 44 platforms, more than any other railroad station in the world. Its platforms, all below ground, serve 30 tracks on the upper level and 26 on the lower. In total, there are 67 tracks, including a rail yard and sidings; of these, 43 tracks are in use for passenger service, while the remaining two dozen are used to store trains.[N 3] Another eight tracks and four platforms are being built on two new levels deep underneath the existing station as part of East Side Access.

Grand Central Terminal was named by and for the New York Central Railroad, which built the station and its two predecessors on the site. It has "always been more colloquially and affectionately known as Grand Central Station", the name of its immediate predecessor  [N 2] that operated from 1900 to 1910. The name "Grand Central Station" is also shared with the nearby U.S. Post Office station at 450 Lexington Avenue and, colloquially, with the Grand Central 42nd Street subway station next to the terminal

Grand Central Terminal serves some 67 million passengers a year, more than any other Metro-North station. At morning rush hour, a train arrives at the terminal every 58 seconds.

 

Grand Central Terminal was designed in the Beaux-Arts style by Reed and Stem, which was responsible for the overall design of the terminal, and Warren and Wetmore, which mainly made cosmetic alterations to the exterior and interior. Various elements inside the terminal were designed by French architects and artists Jules-Félix Coutan, Sylvain Salières, and Paul César Helleu. Grand Central has both monumental spaces and meticulously crafted detail, especially on its facade. The facade is based on an overall exterior design by Whitney Warren.

The terminal is widely recognized and favorably viewed by the American public. In America's Favorite Architecture, a 2006-07 public survey by the American Institute of Architects, respondents ranked it their 13th-favorite work of architecture in the country, and their fourth-favorite in the city and state after the Empire State Building, Chrysler Building, and St. Patrick's Cathedral. In 2013, historian David Cannadine described it as one of the most majestic buildings of the twentieth century.  The terminal is also recognized by the American Society of Civil Engineers as a Historic Civil Engineering Landmark, added in 2013.

As proposed in 1904, Grand Central Terminal was bounded by Vanderbilt Avenue to the west, Lexington Avenue to the east, 42nd Street to the south, and 45th Street to the north. It included a post office on its east side. The east side of the station house proper is an alley called Depew Place, which was built along with the Grand Central Depot annex in the 1880s and mostly decommissioned in the 1900s when the new terminal was built. The station house measures 800 feet (240 m) along Vanderbilt Avenue (120 feet longer than originally planned), 300 feet (91 m) on 42nd Street, and 105 feet (32 m) tall.

Grand Central Terminal was designed and built with two main levels for passengers: an upper for intercity trains and a lower for commuter trains. This configuration, devised by New York Central vice president William J. Wilgus, separated intercity and commuter-rail passengers, smoothing the flow of people in and through the station. After intercity service ended in 1991, the upper level was renamed the Main Concourse and the lower the Dining Concourse.

The Main Concourse is located on the upper platform level of Grand Central, in the geographical center of the station building. The 35,000-square-foot (3,300 m2) concourse leads directly to most of the terminal's upper-level tracks, although some are accessed from passageways near the concourse. The Main Concourse is usually filled with bustling crowds and is often used as a meeting place. At the center of the concourse is an information booth topped with a four-sided brass clock, one of Grand Central's most recognizable icons. The terminal's main departure boards are located at the south end of the space; the boards have been replaced numerous times since their initial installation in 1967.  

The middle passageway houses Grand Central Market, a cluster of food shops. The site was originally a segment of 43rd Street which became the terminal's first service dock in 1913. In 1975, a Greenwich Savings Bank branch was built in the space, which was converted into the marketplace in 1998, and involved installing a new limestone facade on the building. The building's second story, whose balcony overlooks the market and 43rd Street, was to house a restaurant, but is instead used for storage.

The southernmost of the three, the Lexington Passage, was originally known as the Commodore Passage after the Commodore Hotel, which it ran through. When the hotel was renamed the Grand Hyatt, the passage was likewise renamed. The passage acquired its current name during the terminal's renovation in the 1990s.

Ramps include the Vanderbilt Avenue ramp and the Oyster Bar ramps. The Vanderbilt Avenue or Kitty Kelly ramp leads from the corner of Vanderbilt Avenue and 42nd Street down into the Shuttle Passage. The ramp was likewise restored in 1998; originally and currently its space was two stories high. Most of the space was built upon, becoming the Kitty Kelly women's shoe store, and later operating as Federal Express.

 

Facilities at Grand Central Terminal:-

Vanderbilt Hall is an event space on the south side of the terminal, between the Park Avenue entrance located to its south and the Main Concourse located to its north. Its west side houses a food hall. The space is lit by Beaux-Arts chandeliers, each with 132 bulbs on four tiers.

 

The Biltmore Room is a 64-by-80-foot (20 by 24 m) marble hall northwest of the Main Concourse that serves as an entrance to tracks 39 through 42. Completed in 1915 directly beneath the New York Biltmore Hotel, it originally served as a waiting room for intercity trains known formally as the incoming train room and colloquially as the "Kissing Room" 

 

The Station Master's Office, located near Track 36, has Grand Central's only dedicated waiting room. The space has benches, restrooms, and a floral mixed-media mural on three of its walls. The room's benches were previously located in the former waiting room, now known as Vanderbilt Hall. Since 2008, the area has offered free Wi-Fi

 

Dining Concourse is a access to the lower-level tracks is provided by the Dining Concourse, located below the Main Concourse and connected to it by numerous stairs, ramps, and escalators. For decades, it was called the Suburban Concourse because it handled commuter rail trains. Today, it has central seating and lounge areas, surrounded by restaurants and food vendors. The shared public seating in the concourse was designed resembling Pullman traincars. These areas are frequented by the homeless, and as a result, in the mid-2010s the MTA created two areas with private seating for dining customers. Grand Central Terminal contains restaurants such as the Grand Central Oyster Bar & Restaurant and various fast food outlets surrounding the Dining Concourse. There are also delis, bakeries, a gourmet and fresh food market, and an annex of the New York Transit Museum. The 40-plus retail stores include newsstands and chain stores, including a Starbucks coffee shop, a Rite Aid pharmacy, and an Apple Store. The Oyster Bar, the oldest business in the terminal, sits next to the Dining Concourse and below Vanderbilt Hall.

An elegantly restored cocktail lounge, the Campbell, sits just south of the 43rd Street/Vanderbilt Avenue entrance. A mix of commuters and tourists access it from the street or the balcony level. The space was once the office of 1920s tycoon John W. Campbell, who decorated it to resemble the galleried hall of a 13th-century Florentine palace. In 1999, it opened as a bar, the Campbell Apartment; a new owner renovated and renamed it the Campbell in 2017

 

(Their are many other facilities available within Grand Central Terminal)

 

Many film and television productions have included scenes shot in the terminal. The MTA hosts about 25 large-scale and hundreds of smaller or amateur productions every year. Kyle McCarthy, who handles production at Grand Central, said, "Grand Central is one of the quintessential New York places. Whether filmmakers need an establishing shot of arriving in New York or transportation scenes, the restored landmark building is visually appealing and authentic." Especially during World War II, Grand Central has been a backdrop for romantic reunions between couples. After the terminal declined in the 1950s, it was more frequently used as a dark, dangerous place, even a metaphor for chaos and disorientation, featuring chase scenes, shootouts, homeless people, and the mentally ill. In the 1990 film The Freshman, for example, Matthew Broderick's character stumbles over an unconscious man and watches fearfully as petty crimes take place around him. Almost every scene in the terminal's train shed was shot on Track 34, one of the few platforms without columns.

The first filmed scene in which Grand Central Terminal appears may be the 1909 short comedy Mr. Jones Has a Card Party. The terminal's first cinematic appearance was in the 1930 musical film Puttin' On the Ritz, and its first Technicolor appearance was in the 1953 film The Band Wagon. Some films from the 20th century, including Grand Central Murder, The Thin Man Goes Home, Hello, Dolly!, and Beneath the Planet of the Apes used reconstructions of Grand Central, built in Hollywood, to stand in for the terminal. Additionally, the terminal was drawn and animated for use in the animated films Madagascar (2005) and Wreck-It Ralph (2012) 

Grand Central Terminal is one of the world's ten most visited tourist attractions, with 21.6 million visitors in 2018, excluding train and subway passengers.The high visitor traffic makes it one of the most-photographed places in New York City and the United States. A 2009 Cornell University study mapping out geotagged photos worldwide indicated the station was the fourth most photographed place in New York City. The Metropolitan Transportation Authority has partnerships with the Municipal Art Society for daily docent-led tours of the station, and with audio tour producer Orpheo USA for half- and full-hour tours with headsets. The audio tour is also available as a smartphone app. The tours debuted in 2013, in conjunction with the terminal's centennial celebration.

Transit passenger traffic makes the terminal the third-busiest train station in North America, after New York Penn Station and Toronto Union Station. 

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Fisherman's Wharf, San Francisco, California.

Fisherman's Wharf is a neighborhood and popular tourist attraction in San Francisco, California. It roughly encompasses the northern waterfront area of San Francisco from Ghirardelli Square or Van Ness Avenue east to Pier 35 or Kearny Street. The F Market streetcar runs through the area, the Powell-Hyde cable car lines runs to Aquatic Park, at the edge of Fisherman's Wharf, and the Powell-Mason cable car line runs a few blocks away.

San Francisco's Fisherman's Wharf gets its name and neighborhood characteristics from the city's early days of the mid to later 1800s when Italian immigrant fishermen came to the city to take advantage of the influx of population due to the gold rush. Most of the Italian immigrant fishermen settled in the North Beach area close to the wharf and fished for the local delicacies and dungeness crab. From then until the present day the wharf remained the center of operations for San Francisco's fishing fleet. Despite its redevelopment into a tourist attraction during the 1970s and 1980s, the area is still home to many active fishermen and their fleets.

In 2010, a $15 million development plan was proposed by city officials hoping to revitalize its appearance for tourists, and to reverse the area's downward trend in popularity among San Francisco residents.

One of the busiest and well known tourist attractions in the western  United States, Fisherman's Wharf is best known for being the location of Pier 39, the  Cannery Shopping Center, Ghirardelli Square, a Ripley's Believe it or Not museum, the  Musée Mécanique, Wax Museum at Fishermans Wharf, and the San Francisco Maritime National Historical Park.

 

Seafood restaurants are plentiful in the area, including the floating Forbes Island restaurant at Pier 39 to stands that serve fresh seafood. Some of the restaurants, including Fishermen's Grotto, Pompei's Grotto and Alioto's, go back for three generations of the same family ownership. Other restaurants include chains like Applebee's and Bubba Gump Shrimp Co. The area also has an In-N-Out Burger; local business leaders said they opposed every other fast food chain except In-N-Out, because they wanted to maintain the flavor of family-owned, decades-old businesses in the area, with one saying locals would ordinarily "be up in arms about a fast-food operation coming to Fisherman's Wharf," but the family-owned In-N-Out "is different."

Other attractions in Fisherman's Wharf area are the Hyde Street Pier (part of the San Francisco Maritime National Historical Park), the USS Pampanito, a decommissioned World War II era submarine, and the Balclutha, a 19th-century cargo ship. Nearby Pier 45 has a chapel in memory of the "Lost Fishermen" of San Francisco and Northern California.

There is a sea lion colony next to Pier 39. They "took-up" residence months before the Loma Prieta earthquake in 1989. The sea lions lie on wooden docks that were originally used for docking boats. Fisherman's Wharf plays host to many San Francisco events, including a fireworks display on the Fourth of July and some of the best views of the Fleet Week air shows featuring The Blue Angels.

The USS Pampanito (SS-383) and SS Jeremiah O'Brien are National Historic Landmarks, preserved as a memorial and museum ships as part of the San Francisco Maritime National Park Association located at the Wharf.

In 1985, the wharf was used as a filming location in the James Bond film A View to a Kill, where Bond (played for the last time by Roger Moore) met with CIA agent Chuck Lee (David Yip) in his quest to eliminate the villain of the film, Max Zorin (Christopher Walken).

The Tower of London, North bank of the River Thames, London UK

The Tower of London, officially Her Majesty's Royal Palace and Fortress of the Tower of London, is a historic castle on the north bank of the River Thames in central London. It lies within the London Borough of Tower Hamlets, which is separated from the eastern edge of the square mile of the City of London by the open space known as Tower Hill. It was founded towards the end of 1066 as part of the Norman Conquest. The White Tower, which gives the entire castle its name, was built by William the Conqueror in 1078 and was a resented symbol of oppression, inflicted upon London by the new ruling elite. The castle was also used as a prison from 1100 (Ranulf Flambard) until 1952 (Kray twins), although that was not its primary purpose. A grand palace early in its history, it served as a royal residence. As a whole, the Tower is a complex of several buildings set within two concentric rings of defensive walls and a moat. There were several phases of expansion, mainly under kings Richard I, Henry III, and Edward I in the 12th and 13th centuries. The general layout established by the late 13th century remains despite later activity on the site.

The Tower of London has played a prominent role in English history. It was besieged several times, and controlling it has been important to controlling the country. The Tower has served variously as an armoury, a treasury, a menagerie, the home of the Royal Mint, a public record office, and the home of the Crown Jewels of England. From the early 14th century until the reign of Charles II in the 17th century, a procession would be led from the Tower to Westminster Abbey on the coronation of a monarch. In the absence of the monarch, the Constable of the Tower is in charge of the castle. This was a powerful and trusted position in the medieval period. In the late 15th century, the castle was the prison of the Princes in the Tower. Under the Tudors, the Tower became used less as a royal residence, and despite attempts to refortify and repair the castle, its defences lagged behind developments to deal with artillery.

The zenith of the castle's use as a prison was the 16th and 17th centuries, when many figures who had fallen into disgrace, such as Elizabeth I before she became queen, Sir Walter Raleigh, and Elizabeth Throckmorton, were held within its walls. This use has led to the phrase "sent to the Tower". Despite its enduring reputation as a place of torture and death, popularised by 16th-century religious propagandists and 19th-century writers, only seven people were executed within the Tower before the World Wars of the 20th century. Executions were more commonly held on the notorious Tower Hill to the north of the castle, with 112 occurring there over a 400-year period. In the latter half of the 19th century, institutions such as the Royal Mint moved out of the castle to other locations, leaving many buildings empty. Anthony Salvin and John Taylor took the opportunity to restore the Tower to what was felt to be its medieval appearance, clearing out many of the vacant post-medieval structures.

In the First and Second World Wars, the Tower was again used as a prison and witnessed the executions of 12 men for espionage. After the Second World War, damage caused during the Blitz was repaired, and the castle reopened to the public. Today, the Tower of London is one of the country's most popular tourist attractions. Under the ceremonial charge of the Constable of the Tower, and operated by the Resident Governor of the Tower of London and Keeper of the Jewel House, the property is cared for by the charity Historic Royal Palaces and is protected as a World Heritage Site. 

The Tower was orientated with its strongest and most impressive defences overlooking Saxon London, which archaeologist Alan Vince suggests was deliberate. It would have visually dominated the surrounding area and stood out to traffic on the River Thames. The castle is made up of three "wards", or enclosures. The innermost ward contains the White Tower and is the earliest phase of the castle. Encircling it to the north, east, and west is the inner ward, built during the reign of Richard I (1189–1199). Finally, there is the outer ward which encompasses the castle and was built under Edward I. Although there were several phases of expansion after William the Conqueror founded the Tower of London, the general layout has remained the same since Edward I completed his rebuild in 1285.

The castle encloses an area of almost 12 acres (4.9 hectares) with a further 6 acres (2.4 ha) around the Tower of London constituting the Tower Liberties – land under the direct influence of the castle and cleared for military reasons. The precursor of the Liberties was laid out in the 13th century when Henry III ordered that a strip of land adjacent to the castle be kept clear. Despite popular fiction, the Tower of London never had a permanent torture chamber, although the basement of the White Tower housed a rack in later periods. Tower Wharf was built on the bank of the Thames under Edward I and was expanded to its current size during the reign of Richard II (1377–1399)

The White Tower is a keep, which was often the strongest structure in a medieval castle, and contained lodgings suitable for the lord – in this case, the king or his representative. According to military historian Allen Brown, "The great tower was also, by virtue of its strength, majesty and lordly accommodation, the donjon par excellence". As one of the largest keeps in the Christian world, the White Tower has been described as "the most complete eleventh-century palace in Europe".

The White Tower, not including its projecting corner towers, measures 36 by 32 metres (118 by 105 ft) at the base, and is 27 m (90 ft) high at the southern battlements. The structure was originally three storeys high, comprising a basement floor, an entrance level, and an upper floor. The entrance, as is usual in Norman keeps, was above ground, in this case on the south face, and accessed via a wooden staircase which could be removed in the event of an attack. It was probably during Henry II's reign (1154–1189) that a forebuilding was added to the south side of the tower to provide extra defences to the entrance, but it has not survived. Each floor was divided into three chambers, the largest in the west, a smaller room in the north-east, and the chapel taking up the entrance and upper floors of the south-east. At the western corners of the building are square towers, while to the north-east a round tower houses a spiral staircase. At the south-east corner there is a larger semi-circular projection which accommodates the apse of the chapel. As the building was intended to be a comfortable residence as well as a stronghold, latrines were built into the walls, and four fireplaces provided warmth.

The main building material is Kentish rag-stone, although some local mudstone was also used. Caen stone was imported from northern France to provide details in the Tower's facing, although little of the original material survives as it was replaced with Portland stone in the 17th and 18th centuries. As most of the Tower's windows were enlarged in the 18th century, only two original – albeit restored – examples remain, in the south wall at the gallery level.

The tower was terraced into the side of a mound, so the northern side of the basement is partially below ground level. As was typical of most keeps, the bottom floor was an undercroft used for storage. One of the rooms contained a well. Although the layout has remained the same since the tower's construction, the interior of the basement dates mostly from the 18th century when the floor was lowered and the pre-existing timber vaults were replaced with brick counterparts. The basement is lit through small slits.

The entrance floor was probably intended for the use of the Constable of the Tower, Lieutenant of the Tower of London and other important officials. The south entrance was blocked during the 17th century, and not reopened until 1973. Those heading to the upper floor had to pass through a smaller chamber to the east, also connected to the entrance floor. The crypt of St John's Chapel occupied the south-east corner and was accessible only from the eastern chamber. There is a recess in the north wall of the crypt; according to Geoffrey Parnell, Keeper of the Tower History at the Royal Armouries, "the windowless form and restricted access, suggest that it was designed as a strong-room for safekeeping of royal treasures and important documents".

The upper floor contained a grand hall in the west and residential chamber in the east – both originally open to the roof and surrounded by a gallery built into the wall and St John's Chapel in the south-east. The top floor was added in the 15th century, along with the present roof. St John's Chapel was not part of the White Tower's original design, as the apsidal projection was built after the basement walls. Due to changes in function and design since the tower's construction, except for the chapel little is left of the original interior. The chapel's current bare and unadorned appearance is reminiscent of how it would have been in the Norman period. In the 13th century, during Henry III's reign, the chapel was decorated with such ornamentation as a gold-painted cross, and stained glass windows that depicted the Virgin Mary and the Holy Trinity.

The Tower of London has become established as one of the most popular tourist attractions in the country. It has been a tourist attraction since at least the Elizabethan period, when it was one of the sights of London that foreign visitors wrote about. Its most popular attractions were the Royal Menagerie and displays of armour. The Crown Jewels also garner much interest, and have been on public display since 1669. The Tower steadily gained popularity with tourists through the 19th century, despite the opposition of the Duke of Wellington to visitors. Numbers became so high that by 1851 a purpose-built ticket office was erected. By the end of the century, over 500,000 were visiting the castle every year.

Over the 18th and 19th centuries, the palatial buildings were slowly adapted for other uses and demolished. Only the Wakefield and St Thomas's Towers survived. The 18th century marked an increasing interest in England's medieval past. One of the effects was the emergence of Gothic Revival architecture. In the Tower's architecture, this was manifest when the New Horse Armoury was built in 1825 against the south face of the White Tower. It featured elements of Gothic Revival architecture such as battlements. Other buildings were remodelled to match the style and the Waterloo Barracks were described as "castellated Gothic of the 15th century". Between 1845 and 1885 institutions such as the Mint which had inhabited the castle for centuries moved to other sites; many of the post-medieval structures left vacant were demolished. In 1855, the War Office took over responsibility for manufacture and storage of weapons from the Ordnance Office, which was gradually phased out of the castle. At the same time, there was greater interest in the history of the Tower of London.

Public interest was partly fuelled by contemporary writers, of whom the work of William Harrison Ainsworth was particularly influential. In The Tower of London: A Historical Romance he created a vivid image of underground torture chambers and devices for extracting confessions that stuck in the public imagination. Ainsworth also played another role in the Tower's history, as he suggested that Beauchamp Tower should be opened to the public so they could see the inscriptions of 16th- and 17th-century prisoners. Working on the suggestion, Anthony Salvin refurbished the tower and led a further programme for a comprehensive restoration at the behest of Prince Albert. Salvin was succeeded in the work by John Taylor. When a feature did not meet his expectations of medieval architecture Taylor would ruthlessly remove it; as a result, several important buildings within the castle were pulled down and in some cases post-medieval internal decoration removed.

Although only one bomb fell on the Tower of London in the First World War (it landed harmlessly in the moat), the Second World War left a greater mark. On 23 September 1940, during the Blitz, high-explosive bombs damaged the castle, destroying several buildings and narrowly missing the White Tower. After the war, the damage was repaired and the Tower of London was reopened to the public. A 1974 Tower of London bombing in the White Tower Mortar Room left one person dead and 41 injured. No one claimed responsibility for the blast, but the police investigated suspicions that the IRA was behind it.

In the 21st century, tourism is the Tower's primary role, with the remaining routine military activities, under the Royal Logistic Corps, having wound down in the latter half of the 20th century and moved out of the castle. However, the Tower is still home to the regimental headquarters of the Royal Regiment of Fusiliers, and the museum dedicated to it and its predecessor, the Royal Fusiliers. Also, a detachment of the unit providing the Queen's Guard at Buckingham Palace still mounts a guard at the Tower, and with the Yeomen Warders, takes part in the Ceremony of the Keys each day. On several occasions through the year gun salutes are fired from the Tower by the Honourable Artillery Company, these consist of 62 rounds for royal occasions, and 41 on other occasions.

Since 1990, the Tower of London has been cared for by an independent charity, Historic Royal Palaces, which receives no funding from the Government or the Crown. In 1988, the Tower of London was added to the UNESCO list of World Heritage Sites, in recognition of its global importance and to help conserve and protect the site. However, recent developments, such as the construction of skyscrapers nearby, have pushed the Tower towards being added to the United Nations' Heritage in Danger List. The remains of the medieval palace have been open to the public since 2006 where visitors can explore the restored chambers. Although the position of Constable of the Tower remains the highest position held at the Tower, the responsibility of day-to-day administration is delegated to the Resident Governor. The Constable is appointed for a five-year term; this is primarily a ceremonial post today but the Constable is also a trustee of Historic Royal Palaces and of the Royal Armouries. General Sir Nick Houghton was appointed Constable in 2016.

At least six ravens are kept at the Tower at all times, in accordance with the belief that if they are absent, the kingdom will fall. They are under the care of the Ravenmaster, one of the Yeoman Warders. As well as having ceremonial duties, the Yeoman Warders provide guided tours around the Tower. Over 2.9 million people visited the Tower of London in 2019.

 

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