La Línea de la Concepción

La Línea de la Concepción is a municipality of Spain belonging to the province of Cádiz, Andalusia.

The city lies on the sandy isthmus which is part of the eastern flank of the Bay of Gibraltar, and it limits with the Gibraltar–Spain border to the south. La Línea has close economic and social links with the British overseas territory of Gibraltar.

The first dwellings, which date back to the 18th century, were behind the Spanish fortification lines drawn up during the Sieges of Gibraltar which took place during the 18c and 19c wars in Europe.