Malmöhus Castle, located west of the old city core, was built in 1437 by Erik of Pomerania, inhabited by the kings of Denmark in the 1500s, and used as a prison until 1914. Currently it houses a history museum, art museum, aquarium, and terrarium. Sharing the castle grounds are the Kommendanthuset (Commandant's House) used for various exhibitions throughout the year. Fiskehoddorna - a small, traditional fish market - lies nearby.