The London Eye is a giant Ferris wheel situated on the banks of the River Thames in London, England.
The entire structure is 135 metres (443 ft) tall and the wheel has a diameter of 120 metres (394 ft).
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. When erected in 1999 it was the tallest Ferris wheel in the world until 2006.