A visitor looks at a 1st century AD gold crown from the tomb of a nomadic woman in the Tillya Tepe archaeological site in northern Afghanistan, on display in an exhibition 'Afghanistan: Crossroads of the Ancient World' at the British Museum in London, Tuesday, March 1, 2011. The exhibition is showcasing over 200 objects belonging to the National Museum of Afghanistan which is currently undergoing reconstruction and accompanied by selected items from the British Museum. (AP Photo/Sang Tan)