Castillo de los Moros de Falces Monument · Falces, Ribera Alta, Navarra An old border fortress that gave the town its Arabic name; in 1470, King Juan II donated it, along with its taxes, to mosén Pierres de Peralta, and in 1513 Fernando the Catholic granted the Peralta family the title of Marqueses de Falces. 1470; 1513 Photo: Ane (Tagzania user ID: 16929) (CC BY-SA 4.0) What to see and do in Falces