This town took its name from Count Rodrigo González Girón. It was he who, in the mid-12th century, banished the Moors from this region once and for all, and built this town on top of a former Roman castrum, itself built atop a Celtic settlement. Its solid fortifications speak to its position on the border with Portugal. Paradoxically, although it is one of the most well-defended European borders on both sides, this frontier was the most stable in all of Europe’s history and has remained this way for 500 years. The only fighting to take place here was against Napoleon’s armies. Nowhere is the relationship between centre and periphery more marked than in such citadels.