Main entrance of the British Museum in London. The center of the museum was redeveloped in 2000 to become the Great Court, with a tessellated glass roof by Buro Happold and Foster and Partners surrounding the original Reading Room.The British Museum in London, England, is one of the world's largest museums of human history and culture.Its collections, which number more than seven million objects from all continents, illustrate and document the story of human culture from its beginning to the present.fter its foundation, the British Museum received several gifts, including the Thomason Library and David Garrick's library of 1,000 printed plays, but had few ancient relics and would have been unrecognizable to visitors of the modern museum.