Gherkin at Sunset
This building is commonly known as the Gherkin, although its official name is the Swiss Re Tower and it is also known by its address of 30 St Mary Axe. It's the (second tallest - see below!) building in the CIty of London, although I think the tower at Canary Wharf is still the tallest building in the whole of London by some way.
The structure in front is the end of Tower Bridge.
Probably better viewed large.
Now used as a book cover for a Company Law text book, published by Routledge. [Purchased via Getty]