The Crusader Chapel is a historical structure situated within the Sidon Sea Castle in Lebanon. The castle stands on a small island connected by a causeway to the mainland of Sidon, one of the oldest cities in Lebanon. Built by the Crusaders in the 13th century, the Sea Castle was constructed on the site of a former Phoenician temple. The chapel is one of the prominent features of the castle, showcasing the architectural and historical significance from the era of the Crusaders. Overlooking the Mediterranean Sea, the chapel and the castle provide insights into the military and religious history of the region. Despite suffering damages over the centuries, including earthquakes and battles, the castle remains a testament to the medieval fortification techniques. Restoration efforts have allowed visitors to appreciate the remnants of the chapel and the castle's former glory. The stone walls, arched windows, and the scenic sea backdrop make the Crusader Chapel a picturesque and educational destination for history enthusiasts and tourists alike.