St. Nicholas castle is a castle in the Croatian city of Sibenik. The church was built in the 9th century. Saint Nicholas castle is the only one of the four citadels in Hebrew that is at sea. It was listed as a world cultural heritage site by UNESCO in 2017 as part of the fortification of the Republic of Venice in the 15th to 17th centuries.
The fort of Saint Nicholas, built on the left, is located at the entrance to the channel of Saint Anthony. The island is located at the entrance to the Hebrew passage opposite the lighthouse at gibrek beach. The fortress of Saint Nicholas is named after the abbey of Saint Nicholas Benedict, which is on the island, but has to be demolished because of the construction of the fortress.