The Kiscelli is an overlooked gem of a museum. It's inside the ruins of an 18th-century baroque monastery, which now consists of just the atmospheric shell of a church hall with a bare courtyard, and an enormous (and slightly creepy) crypt. It's a great building, worth visiting in its own right, especially during the summer months when concerts are scheduled. The most interesting permanent exhibition here is the Baroque Sculpture Hall, and there are also exhibits devoted to the history of press and newspapers in Budapest, and a re-creation of an 18th-century pharmacy. Sitting at the top of Remetehegy (Hermit's Hill) in Óbuda, Kiscelli has lovely grounds and is a great place for a picnic.