The stately, castle-like museum across from the Old City houses one of Switzerland's most distinguished historical collections. The prize exhibits include the Graechwil Hydria, a mysterious bronze vessel of Greek provenance dating to the 6th centuryBC. As well as the Königsfelden Diptych, a master-piece of Venetian craftsmanship created c. 1290. The historical collection is an ideal key to the history of Bern.