London Eye

Now London has the London Eye - an extraordinary symbol for an extraordinary city. The world's largest observation wheel offers a spectacular way to take in over 55 of London's most famous landmarks in just 30 minutes! Combine your flight on the Eye with a 40 minute circular cruise on the Thames. Departing from the London Eye pier the commentary takes you from the Houses of Parliament to the Tower of London and back to the London Eye.
This picture is taking from http://www.infolondon.co.uk

Prices:
Adult: £14.50 to £29.50 per ticket
Child: £7.25 to £9.00 per ticket
Concession: £11.00 per ticket

You also can buy ticket by online, just visit http://www.visitlondon.com

This information is from http://www.visitlondon.com