Which Hungarian castle is now a museum?

Referred to as the Royal Palace (Hungarian: Királyi-palota) in the past, the Buda Castle is a historical castle and a palace complex of the Hungarian kings in Budapest. It was first completed in 1265, but the massive Baroque palace today occupying most of the site was built between 1749 and 1769. The castle now houses the Hungarian National Gallery and The Budapest History Museum.

Buda Castle sits on the southern tip of Castle Hill, surrounded by the touristic area known as Várnegyed, which is famous for medieval, Baroque and Neoclassical houses, churches, public buildings, and monuments. The hill is linked to Clark Ádám Square and the Széchenyi Chain Bridge by the Castle Hill Funicular. The castle is a part of the Budapest World Heritage Site, declared in 1987. The original Royal Palace was ruined during WWII, but it was rebuilt in a simplified Stalin Baroque style during the Kádár era.