1. Buckingham Palace has served as the official London residence of Britain's sovereigns since 1837 and today is the administrative headquarters of the Monarch.
Although in use for the many official events and receptions held by The Queen, the State Rooms at Buckingham Palace are open to visitors every year. For visitor information, please visit the Royal Collection website.
Buckingham Palace has 775 rooms. These include 19 State rooms, 52 Royal and guest bedrooms, 188 staff bedrooms, 92 offices and 78 bathrooms. In measurements, the building is 108 metres long across the front, 120 metres deep (including the central quadrangle) and 24 metres high.
The Palace is very much a working building and the centrepiece of Britain's constitutional monarchy. It houses the offices of those who support the day-to-day activities and duties of The Queen and The Duke of Edinburgh and their immediate family.
The Palace is also the venue for great Royal ceremonies, State Visits and Investitures, all of which are organised by the Royal Household.
Although Buckingham Palace is furnished and decorated with priceless works of art that form part of the Royal Collection, one of the major art collections in the world today. It is not an art gallery and nor is it a museum.
Its State Rooms form the nucleus of the working Palace and are used regularly by The Queen and members of the Royal Family for official and State entertaining.
More than 50,000 people visit the Palace each year as guests to banquets, lunches, dinners, receptions and the Royal Garden Parties.
2. Big Ben is the nickname for the great bell of the clock at the north end of the Palace of Westminster in London, and often extended to refer to the clock and the clock tower. The tower is now officially called the Elizabeth Tower, after being renamed to celebrate the Diamond Jubilee of Queen Elizabeth II. The Elizabeth Tower holds the largest four-faced chiming clock in the world and is the third-tallest free-standing clock tower. The tower was completed in 1858 and had its 150th anniversary on 31 May 2009, during which celebratory events took place. The Elizabeth Tower has become one of the most prominent symbols of both London and England and is often in the establishing shot of films set in the city.
3. A recent but already very popular tourist attraction is the London Eye, a giant observation wheel located in the Jubilee Gardens on the South Bank. The 135 meter (443ft) tall structure was built as part of London's millennium celebrations.
4. Stonehenge is a prehistoric monument in Wiltshire, England, about 2 miles (3.2 km) west of Amesbury and 8 miles (13 km) north of Salisbury. One of the most famous sites in the world, Stonehenge is the remains of a ring of standing stones set within earthworks. It is in the middle of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.
5. London's Tower Bridge is one of the most recognizable bridges in the world. Its Victorian Gothic style stems from a law that forced the designers to create a structure that would be in harmony with the nearby Tower of London.
Plans for the Tower Bridge were devised around 1876 when the east of London became extremely crowded and a bridge across the Thames in that area of the city seemed a necessity.