Mentioned by Lonely Planet
20 best free things to do in London
"The British Museum is one of London's top attractions, and absolutely free. It is bursting at the seams with enthralling artifacts from all over the world, from Egyptian mummies to samurai armor and Anglo-Saxon burial treasures to the Rosetta Stone. Remarkably, the 80,000 objects on display at any one time only make up 1% of the eight million objects in the museum’s possession."