English: The Surosowan Palace/Fort is estimated to have been established in the 17th century. Fort Surosowan is estimated to have been built between 1526-1570 during the reign of the first Sultan of Banten, namely Sultan Maulana Hasanudin. The history of the construction of this palace cannot be separated from the gift of territory handed over by Sunan Gunung Jati to his son Sultan Maulana Hasanudin. The Surosowan Palace/Fort was built in several stages and at least went through four phases. In the early construction phase, the walls surrounding the palace were between 100 meters and 125 meters wide. The wall is made without bastions and is built from a large arrangement of bricks mixed with clay (clay). The first development phase is thought to have taken place during the reign of Sultan Maulana Hasanuddin (1552 -1570). During the second phase of construction, the inner walls and bastions were erected. The inner wall serves as a shot stop. Between the first and second phases there was a change in the function of the wall, namely from serving as a perimeter wall to becoming a defensive wall with European elements. At this time, the Surosowan Palace was called Fort Diamant (fort: fort, diamant: diamond) by the Dutch. The third phase of construction is the stage of constructing rooms along the north wall, adding floors to reach the parapet. In the fourth phase of construction, changes were made to the north gate and it is estimated that it will also be to the east gate.