Algeciras, the major port linking Spain with Africa, is also an industrial town, a big fishing port and a centre for drug smuggling. If you have time to kill here, wander through the old town up to the palm-fringed main square, Plaza Alta, flanked by two old churches. Keep your wits about you in the port, bus station and market.
Algeciras was taken by Alfonso XI from the Merenids of Morocco in 1344, but later razed by Mohammed V of Granada. In 1704 it was repopulated by many of those who left Gibraltar after it was taken by the British.
During summer the port is hectic, as hundreds of thousands of Moroccans working in Europe return home for summer holidays.