It is the largest and best preserved local castle, and is one of the most visited historical sites on the island.

The name Borj El Ghazi Mustapha comes from the Qaid who settled in Djerba in 1559.

The castle is located in the north of Houmt El Souk near the fishing port.

[1] It was built in the end of the 14th century over the ruins of the ancient Roman city of Griba, after the deportation of the soldiers of Alfonso V of Aragon on the orders of the hafsid sultan of Tunisia.

In 1903, it became a property of the Tunisian authorities who gave it the status of a national historical monument on 15 March 1904[citation needed] and transformed it into a museum.