The London eye

The London Eye is a giant 135-metre (443 ft) tall Ferris wheel situated on the banks of the River Thames in the British capital.

The London Eye is located at the western end of Jubilee Gardens, on the South Bank of the River Thames in the London Borough of Lambeth in England, between Westminster Bridge and Hungerford Bridge. The site is adjacent to that of the former Dome of Discovery, which was built for the Festival of Britain in 1951.

Houses of Parliament seen from London Eye

It is the tallest Ferris wheel in Europe, and the most popular paid tourist attraction in the United Kingdom, visited by over 3.5 million people annually.

History
The London Eye was formally opened by the then Prime Minister, Tony Blair, on 31 December 1999, although it was not opened to the public until 9 March 2000 because of technical problems. Since its opening, the Eye has become a major landmark and tourist attraction.
In 2009 Merlin Entertainments opened a pre-flight 4D Experience at The London Eye, which is included in the ticket price. The newly refurbished ticket hall and 4D cinema experience was designed by architects Kay Elliott working with Merlin Studios project designer Craig Sciba. Merlin Studios later appointed Simex-Iwerks as the 4D theatre hardware specialists. The film was written and directed by 3D director Julian Napier and 3D produced by Phil Streather. The same year the first stage of a £12.5 million capsule upgrade started. Each 10-tonne capsule was taken down and floated down the river to Tilbury Docks in Essex.
The London Eye marked its 10th anniversary on 9 March 2010.

Quiz:
In what year wheel construction has begun?
In 1998-1999

Name date of the 10th anniversary of "the London eye"?
The 9 th of March/ 2010/.