Hidden Treasures 2013: Natural History Museum

Take a behind-the-scenes tour of the Natural History Museum's phenomenal store of specimens in the Darwin Centre's Spirit Collection. The stats give you a sense of what to expect: 27km of shelving, 22 million specimens and, yes, a giant squid. These tours are being run as part of the Hidden Treasures season; for this one, you'll need to leave your bag and any bulky coats at home (or pay £1 for the cloakroom) and arrive at 10mins before the start of the tour and the Darwin Centre Spirit Building information desk.