The remains of the medieval Old Castle - one of four original towers and a palace wing - were rebuilt in neo-Gothic style at the end of the 19th century to mark a visit by Emperor Franz Joseph. Today they house the Domokos Kuny Museum. On the ground floor are archaeological finds from nearby Roman settlements, bits of the 12th-century Benedictine monastery near Oroszlány and contemporary drawings of the castle in its heyday.
The 'Life in the Old Castle' exhibit on the 1st floor is interesting; don't miss the cathedral-like green-tiled Gothic stove that takes pride of place in the Knights' Hall. Material on the 2nd floor examines the work of a dozen 18th-century artisans, including Kuny, a master ceramist. Tata porcelain was well known for centuries (the crayfish, once abundant in the lake, was a common motif) and the craft indirectly led to the foundation of the porcelain factory at Herend near Veszprém.
