In its origins, the town was a kind of "provisional" camp to supply the population near the siege fortifications of Gibraltar. Now, Every day thousands of tourists cross the border between the Linea and Gibraltar. The Linea becomes an indefinite territory where people are passing through.
La Linea de la Concepcion is the land borders with Gibraltar: it is ancient name was Linea de Contravalacion, due to its physiognomy and its personality are determined by the presence of Gibraltar.
The economy asphyxiation produced by the impossibility of competing with the free zone of Gibraltar and the absolute abandonment by the Spanish Government makes it the province most affected by unemployment. La Linea is an isthmus, a narrow strip of land that joins two large areas of land across the sea, the border between these two territory is the runway of an airport.