Gibraltar, British overseas territory occupying a narrow peninsula of Spain’s southern Mediterranean coast, just northeast of the Strait of Gibraltar, on the east side of the Bay of Gibraltar (Bay of Algeciras), and directly south of the Spanish city of La Línea. It is 3 miles (5 km) long and 0.75 mile (1.2 km) wide and is connected to Spain by a low, sandy isthmus that is 1 mile (1.6 km) long. Its name is derived from Arabic: Jabal Ṭāriq (Mount Tarik), honouring Ṭāriq ibn Ziyād, who captured the peninsula in 711. Gibraltar is a heavily fortified British air and naval base that guards the Strait of Gibraltar, which is the only entrance to the Mediterranean Sea from the Atlantic Ocean. Since the 18th century, Gibraltar has been a symbol of British naval strength, and it is commonly known in that context as “the Rock.” The Rock of Gibraltar is considered one of the two Pillars of Heracles (Hercules); the other has been identified as one of two peaks in northern Africa: Mount Hacho, near the city of Ceuta (the Spanish exclave on the Moroccan coast), or Jebel Moussa (Musa), in Morocco. The Pillars—which, according to Homer, were created when Heracles broke the mountain that had connected Africa and Europe—defined the western limits of navigation for the ancient Mediterranean world. Area 2.25 square miles (5.8 square km). Pop. (2007 est.) 29,257.

The peninsula consists of a limestone and shale ridge (the Rock), which rises abruptly from the isthmus to 1,380 feet (421 metres) at Rock Gun, its northernmost summit. Its highest point, 1,396 feet (426 metres), is attained near its southern end. The Rock shelves down to the sea at Great Europa Point, which faces Ceuta. From the Mediterranean Sea, Gibraltar appears as a series of sheer, inaccessible cliffs, fronting the sea on the peninsula’s east coast. The Rock’s slope is more gradual on its western side and is occupied by tier upon tier of houses that stretch for some 300 feet (90 metres) above the old defensive walls. Higher up, limestone cliffs almost isolate the Upper Rock, which is covered with a tangle of wild trees.

Gibraltar has no springs or rivers. An area of sand slopes above Catalan and Sandy bays has been sheeted over to provide a rain-catchment area, which was once the sole source of potable water for Gibraltar. The water was stored in a number of tanks blasted into the Rock. The rainwater was then blended with water pumped from wells on the isthmus or distilled from the sea. The catchment ceased to be used as a source of potable water in the 1990s, when a desalinization plant built in the 1980s was expanded, but it still is used as a service reservoir. Gibraltar has hot, humid, and almost rainless summers; mild winters during which there is usually adequate rain; and warm, moderately rainy, transitional seasons. The territory is subject to strong easterly winds.

01/01 (New Year's Eve), 09/03 (Commonwealth Day), 10/04 (Good Friday), 13/04 (Easter Monday), 28/04 (Workers' Memorial Day), 01/05 (May Day), 08/05 (Victory Day), 25/05 (Spring Bank Holiday), 15/06 (Queen's Holiday), 31/08 (Late Summer Bank Holiday), 10/09 (National Holiday), 25/12 (Christmas Day), 28/12 (Boxing Day)

Airports: Gibraltar Airport

Ports: Gibraltar Port