Torre San Gregorio stands on a small promontory by the coast, and on a hill 33 m high. The tower, almost completely in ruins, is located about 2. 5 miles SE of Torre Sinfono. Being of the same colour as the land around it, the tower is not easily distinguished from seaward. There are some whitish houses E of the tower. Anchorage can be obtained by small vessels, sheltered from N winds, about 300 m off the head of a small cove about 750 m SE of Torre San Gregorio in depths of about 4 m.