This is a very strange place for the curious traveller. Take time to explore the caves and tunnels especially those not meant for tourists!The inside of the rock is an absolute labyrinth with the secret internal roads and tunnels 4 times longer than those on the surface.Military presence and security in this otherwise deserted area is strong.In Greek mythology Gibraltar was Calpe, one of the Pillars of Hercules, which marked the edge of the Mediterranean and the known world. In 711 Tariq ibn Ziyad, the Muslim governor of Tangier, landed at Gibraltar to launch the Islamic invasion of the Iberia|Iberian Peninsula. The Rock took his name - ''Jabal Tariq'' (Mountain of Tariq) eventually became ''Gibraltar''.Strategically important, Gibraltar was ceded to Great Britain by Spain in the 1713 Treaty of Utrecht; the British garrison was formally declared a colony in 1830. The topmost part of the Rock is still a British military installation, and off-limits to the public.In referendums held in 1967 and 2002, the 27,800 Gibraltarians (2004 figure) ignored foreign pressure and voted overwhelmingly to reject any involvment by Spain in their government. On June 10th 2004, citizens of Gibraltar voted for the first time in the UK MEP (Member of the European Parliament) elections, as part of the South West constituency. http://wikitravel.org/en/Gibraltar