Mers-el-Kébir, 5 km west of Oran, is one of the great natural anchorages of the western Mediterranean — a deep, narrow bay sheltered by the Murdjadjo headland. Used as a naval base by Phoenicians, Romans, Spanish, Ottomans, and French in turn, it is today a working base of the Algerian National Navy with no public access to the inner harbour.
The town above the port is small and pleasant: white houses on the hillside, a couple of seafood restaurants, views across the bay to Oran. The cliff-top road from Oran is itself the attraction — one of the more dramatic drives in northern Algeria.