In the area of Agios Georgios-Gradou, Skala, there are the ruins of an ancient Doric-style temple. The temple was discovered in 1812 by the governor of the island, Charles Philippe de Bosset. Excavations were conducted in 1960 by Sp. Marinatos, in 1969 by P.Kalligas, and in 2001 by A.Sotiriou. The construction of the temple dates from the early 6th century BC and it probably started to operate in the 4th century BC. During the Classical Period, the temple belonged to the ancient city-state of Pronnoi. Excavations have shown no evidence that indicates the deity worshipped in the temple and the shrine was not found. The location of the temple was strategic because the southern part of the island played a crucial role in navigation and was an important station for travellers around the Ionian Islands and Sicily. The Doric-style temple in Skala, is the most important, the biggest and the best-preserved temple infrastructure on the island.