Touirism

Tourism is one of London's prime industries. Annual spending by tourists is around £15 billion. London attracts over 14 million international visitors per year, making it the world's most visited city, attracts 27 million overnight-stay visitors every year.
Among the museums highlights

1. British Museum
2. National Gallery
3. Tate Modern
4. Natural History Museum
5. London Eye
6. Science Museum
7. Tower of London
8. National Maritime Museum
9. Victoria and Albert Museum
10. Madame Tussauds

British Museum and Science museum of London.