The island of Porquerolles is part of Hyères Archipelago, in the Var department. Its northern coast starts from the Deux Frères rocks, off the Cap des Mèdes, and stops approximately at the level of Cap Rousset, shortly before the Langoustier peninsula. It thus covers a fair part of the 4.3 mi (7 km) length of the island. The northern coast of Porquerolles faces the coastal city of Hyères, which gives its name to the archipelago, and closes its harbor in line with the Giens peninsula.