Gibraltar is a British Overseas Territory and headland, on Spain's
south coast. Itâ??s dominated by the Rock of Gibraltar, a 426m-high
limestone ridge. First settled by the Moors in the Middle Ages and later
ruled by Spain, the outpost was ceded to the British in 1713. Layers of
fortifications include the remains of a 14th-century Moorish Castle and
the 18th century Great Siege Tunnels, which were expanded in WWII.