Low Poly Model suitable for simulators and games Maimoon Palace or Maimun Palace (Indonesian: Istana Maimun) is an istana (royal palace) of the Sultanate of Deli and a well-known landmark in Medan, the capital city of North Sumatra, Indonesia. Today, it serves as a museum.

Built by Sultan Ma'mun Al Rashid Perkasa Alamyah in years 18871891, the palace was designed by the Dutch architect Theodoor van Erp and covers 2,772 m with a total of 30 rooms. The Palace has become a popular tourist destination in the city, not solely because of its historical heritage status, but also because of its unique interior design of the palace, combining elements of Malay cultural heritage, Islamic and Indian architecture, with Spanish and Italian furniture and fittings.