Sidon Sea Castle, a prominent historic fortress built by the Crusaders in the early 13th century, is situated in the ancient coastal city of Sidon in Lebanon. Standing guard over the Mediterranean, the castle is perched on a small island connected to the mainland by a causeway, which is a testament to the city's rich maritime history. The fortification was erected by the Crusaders on the site of a former Phoenician temple, incorporating typical medieval military architecture elements. It was partially destroyed by the Mamluks in the late 13th century but later restored. Today, Seafacing Cloisters of the Sidon Sea Castle offer panoramic views of the sea and the city. Visitors can explore the remains of the fortress, including its towers, walls, and courtyard. Historical remnants, coupled with the scenic location, make the Sea Castle an important cultural and touristic landmark in Lebanon, reflecting its blend of different civilizations that shaped the city's history.