The Richard III Museum is located in the tallest of the four gatehouses, Monk Bar, in the historical city walls of York, England. It presents to visitors the life of Richard III, the last king of the Plantagenet dynasty.
Visitors to the museum are asked to consider the alleged guilt of King Richard for the murder of the Princes in the Tower. The facts of the case are presented, and it is made clear that much of the evidence against Richard is not contemporary, and that some was black propaganda encouraged by the Tudor dynasty. Visitors are then allowed to decide the verdict for themselves.
The museum contains a medieval execution chamber, a working portcullis, which visitors can operate, and what is said to be the world's smallest prison cell.