Opened in 1683, in what is now the Museum of the History of Science, the Ashmolean is the oldest museum in the western world. The museum holds collections of Antiquities, Casts, Eastern Art, Coins and Western Art and requires at least an afternoon's viewing if you are to take any of it in. The museum now occupies an impressive building on the north side of Beaumont Street.
Oh and they have Powhatan's cloak which is quite nifty. Well I think so. Honest.