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Abandoned places - The Torre Blanca, or White Tower, was one of the advanced fortifications for the Castle of Castellciutat. This fortification protected the defensive complex from the southern flank. Originally its defenses seem to have been limited to an artillery tower surrounded by polygonal fortifications for the infantry. In 1720, the greatest of the Bourbon military engineers, Alexander de Retz, was in charge, of reconstructing the defenses. Visit https://all-andorra.com/abandoned-places-world-castelciutat/