With Spain to the north and Morocco to the south, Gibraltar is the famous promontory dominating the narrow entrance to the Mediterranean. Its position led to its seizure by the Moors in 711 as a prelude to the conquest of Spain. The Moorish influence includes the name Gibraltar, a corruption of "Jebel Tariq" (Tariq's Mountain), named after the Moorish commander Tariq who built the first fortification. In ancient times Gibraltar was regarded as one of the two Pillars of Hercules, which marked the western limits of the known world. Known commonly as "The Rock," Gibraltar is full of natural caves and manmade tunnels. The Rock itself, composed of limestone and gray marble, is geographically part of the Iberian Peninsula. Politically, the British have controlled Gibraltar for over two centuries. This tiny self-governing British Colony welcomes you to enjoy its historical sites, magnificent views, beautiful beaches and duty free shops.