6. The London Eye and Buckingham Palace

The structure is 135 metres tall and the wheel has a diameter of 120 metres. It was formally opened on 31 December 1999, but did not open to the paying public until 9 March 2000 because of a capsule clutch problem.

It has got 32 capsules for 25 passengers each. The capsules are numbered from 1 to 33, excluding number 13 for superstitious reasons. Each of the 10-tonne capsules represents one of the London Boroughs, and holds up to 25 people, who are free to walk around inside the capsule, though seating is provided. The wheel rotates at 26 cm per second (about 0.9 km/h) so that one revolution takes about 30 minutes. It does not usually stop to take on passengers, the rotation rate is slow enough to allow passengers to walk on and off the moving capsules at ground level. It is, however, stopped to allow disabled or elderly passengers time to embark and disembark safely.

Buckingham Palace is the London residence and administrative headquarters of the monarchy of the United Kingdom. Located in the City of Westminster, the palace is often at the centre of state occasions and royal hospitality.

Originally known as Buckingham House, the building at the core of today's palace was a large townhouse built for the Duke of Buckingham in 1703. King George III bought tis house for Queen Charlotte in 1761. During the 19th century it was enlarged. Buckingham Palace became the London residence of the British monarch on the accession of Queen Victoria in 1837.

There is the Victoria Memorial in front of Buckingham Palace. It is a monument to Queen Victoria and it was unveiled on 16 May 1911, though it was not completed until 1924.