Marmaris Archeology Museum serves in a historical place in Marmaris Castle.

Herodotos, the first city walls in Marmaris, BC. III. He wrote that it was done per thousand. Physkos (Marmaris), which was a Carian city during this period, is a transit point between the Aegean Sea and the Mediterranean as it is today. The port of the city has preserved its importance throughout the ages with trade routes opening to Rhodes and Egypt. 19th century researcher Charles Texier in his work; He mentioned a castle whose ruins are in the Fineks Mountains, dominating the Physkos Bay. B.C. It is known that in 334 BC, Alexander the Great, who invaded Marmaris, had the castle repaired due to its strategic importance.

The only written source that mentions the construction of Marmaris Castle, which is located at a high point behind the Marina, is the Travel Book of Evliya Çelebi. Evliya Çelebi, who traveled around Muğla in the 17th century, mentions that Suleiman the Magnificent ordered the construction of the castle before the Rhodes Campaign and that the castle was used as a military base during the campaign. In the source, it is said that the castle was built with four bases on the bedrock, it has a 400-foot wall built of smooth stones, there is an inscription on the entrance door, and a room for the imam, the custodian and the guards. Another history writer, Celaloğlu Mustafa, does not mention the castle in his work, in which he describes the days of Suleiman the Magnificent and his army in Marmaris, the Rhodes Campaign and their return to Istanbul.

Piri Reis, who wrote the “Naval Book”, does not include Marmaris Castle in his work in which he describes Marmaris Port in detail and on the map he drew. Between 1494 and 1520, when Piri Reis drew other castles in the Mediterranean and took notes for his book, the presence of a castle in Marmaris was not recorded.

In the light of this information, there is another opinion regarding the construction date of Marmaris Castle. According to this, Suleiman the Magnificent, who ascended the throne in 1520, asked for the castle to be built on the return of the Rhodes Campaign. Hafıza Sultan Caravanserai is located at the entrance of the narrow and stepped street leading to the castle. The rectangular planned caravanserai has seven small and one large rooms and is covered with arches. The date 1545 is read on the inscription at the entrance of this building, which is contemporary with the castle. This date strengthens the view that the castle and the inn were built at the same time after the expedition.

A significant part of the fort was destroyed during the First World War, in 1914 by cannon fire from a French warship. It is known that there were 18 houses, a fountain and a cistern in the castle, which was inhabited by the people of Marmaris, starting from the pre-Republic period until recently.

Marmaris Castle was restored between 1980-1990 and opened as Marmaris Museum in 1991.