I love museums. I make it a point to visit museums where ever I travel. There is so much information in most museums that you could either be overwhelmed quite easily or get lost in a different world for hours. The UK has some of the best museums in the world. Some of my favourites are
British Museum: One of the best collections that covers all regions, histories and cultures in the world.
National Gallery: Some of the best Art is displayed here but Art generally covers Western Renaissance period.
Natural History Museum: Covers natural history and therefore provides a great introduction to ecosystems, wildlife and evolution.
Science Museum: One of the best museums to learn almost everything on science
There are many museums in London. These are listed here:
There are also many museums and galleries in the rest of the UK. This is a good source to start researching: