British museum!

The British Museum in London is one of the world's greatest museums of human history and
culture. Its collections, which number more than 13 million objects from all continents, illustrate and document the story of human culture from its beginning to the present.

As with all other national museums and art galleries in Britain, the British Museum charges NO admission fee, although charges are levied for some temporary special exhibitions. You can simply spend whole day in the museum as it is so informative and educational. You are allowed to take as many picture as you like. This is definitely a place that worth a visit.