From the charming medieval Rathausplatz, a covered stairway leads up to the great Schloss Thun, its broad donjon (inner tower) surrounded by four stout turrets. Built in 1186 by Berchtold V, Duke of Zähringen, it houses the fine Schlossmuseum Thun (Thun Castle Museum) and provides magnificent views from its towers. The Knights' Hall has a grand fireplace, an intimidating assortment of medieval weapons, and tapestries, one from the tent of Charles the Bold. The Hall is often the imposing venue for concerts. Other floors display local Steffisburg and Heimberg ceramics, 19th-century uniforms and arms, and Swiss household objects, including charming Victorian toys.