London Eye/Hard Rock Cafe

LONDON EYE
Since opening in March 2000 The London Eye has become an iconic landmark and a symbol of modern Britain. The London Eye is the UK’s most popular paid for visitor attraction, visited by over 3.5 million people a year.

If you want to 'fly' on the Eye, you'll need to purchase a 'flight'. It will be open from 10:00 until 20:00 (remember, London time is on the 24 hour clock).
Prices for a Standard Flight are:

Adult (16 plus) £15.17
Child (5-15 years) £7.59

HARD ROCK CAFE
Standing on Old Park Lane since June 14th 1971, this is the one that started it all. The brainchild of Isaac Tigrett and Peter Morton, the cafe attracted customers from day one with first-rate but moderately priced casual American fare (available no-where else in London or the UK at the time), warm service and ubiquitous Rock 'n' Roll music and sensibility - Hard Rock Cafe London became an instant classic.

My "Unoffical Guide to London" book says you can use US Dollars in this cafe.