Capital of the municipality of Naut Aran, with 597 inhabitants and at an altitude of 1,268 m., on a rocky elevation to the right of the Garona river, and where it meets the Unhòla river, which surrounds the core of Salardú to the N and to the E .
Given its strategic location at the entrance of the Valley through the port of Bonaigua, it resulted in the town being fortified since the medieval period. In the upper part, where the church is today, there was the castle of Salardú, the master tower must have been the current bell tower. Today, there are few remains of the fortification near the apse of the church.

However, some houses with 17th century windows have been preserved. The Plaza Mayor is the center of the old town and has a beautiful 19th century fountain. The parish church of Sant Andreu, located at the top, presiding over a beautiful square enclosed by a wall, should be highlighted. It is a transitional building from the 12th-13th centuries, the door is Romanesque and has some Gothic windows. The bell tower, one of the most prominent in the Valley, has an octagonal plan, dates back to the 15th century and forms a body apart from the SW angle. It is very slender and equipped with arrowheads that give it a defensive character.