Of the ancient castles in Marmaris and the most prominent monuments in the city. The castle has undergone many repairs and restorations to this day. It was rebuilt in 1522 by Suleiman the Magnificent, who used it as a military base for his forces. Today, it has become an archaeological landmark and a museum at the same time. The museum contains many archaeological and artistic exhibits. The castle building offers a wonderful view of the coast and landscape.