Tarifa's 10th-century castle is famous for the siege of 1292, when the defender Guzmán el Bueno refused to surrender even though the attacking Moors threatened to kill his captive son. In defiance, he flung his own dagger down to them, shouting, "Here, use this," or something to that effect (they did indeed kill his son). The Spanish military turned the castle over to the town in the mid-1990s, and it now has a museum on Guzmán and the sacrifice of his son.
Av. Fuerza Armadas, Tarifa, 11380, Spain