The London Eye is a huge Ferris Wheel located directly on the River Thames in London. It is 443 ft. high with a diameter of 394 ft. Built in 1999 it is also known as the Millennium Wheel. It is the most popular paid tourist attraction in all of England.
The Eye provides some of the best views of London you can get. One word of warning though, do not wait to buy tickets upon arrival to London, it will most likely be sold out. The tickets have timed entry and you must depart according to the time you select. We bought our tickets months before arriving in London to ensure we got the day and time we wanted. I would recommend getting those tickets as soon as it is feasible. If you need tickets, they can be purchased here.