In London you are never far from the River Thames.Many tourists go on boat trips from Tower Bridge to Westminster.
Another good boat trip is to Greenwich.In Greenwich you can visit The Old Royal Observatory.The boat passes a lot of famous buildings.
There are some fine ,modern buildings on the South Bank.You can see The royal Festival Hall and The Tate Modern.There are also many art galleries, restaurants and bars on the South bank.
On the South Bank, you can visit the Imax Cinema with its huge screen or you can go on the London Eye.The London Eye is a big wheel that takes you 135 metres above London.It is the slowest big wheel in the world and the best way to see the wholecity.You can see for forty kilometres in all directions.You can see old buildings like St Paul's Cathedral and Windsor Castle, and new buildings like the Millennium Dome and the Gherkin.
The Gerkin is a gass building.It looks like a vegetable. From the London Eye you can also see the tall buildings in Canary Wharf.Canary Wharf is a new centre of business in London.