Standing 135m high in a fairly flat city, the London Eye affords views 25 miles in every direction, weather permitting. Interactive tablets provide great information (in six languages) about landmarks as they appear in the skyline. Each rotation – or 'flight' – takes a gracefully slow 30 minutes. At peak times (July, August and school holidays) it can feel like you'll spend more time in the queue than in the capsule; book premium fast-track tickets to jump the queue.
Tickets are cheaper if purchased online, especially if you book in advance or combine the London Eye with other attractions. Feeling romantic? Hire a capsule for two (£380), with a bottle of champers.
The London Eye has also been the focal point of the capital's celebrated and dramatic midnight New Year's Eve fireworks display.