Giraglia is a French island at the northern tip of Corsica in the Mediterranean Sea, known for its powerful lighthouse and for the Torra di Giraglia, a Genoese tower, both of which are official historical monuments of France. The island is part of the commune of Ersa, but there are no settlements on the island. The closest settlements are Tollare, Ersa commune, and Barcaggio, Rogliano commune, on the main island of Corsica.