El Balcó del Pirineu was urbanised on 1975 on a mountain range on the left of river Segre, near of Montferrer and Castellciutat villages, in the same mountain range.
Parallel to the Valira river rises a mountain range, where stand the remains of two great fortresses, the Ciutadella and Ciutat Castle (in Castellciutat), both of historic importance in the town.