This Baroque sanctuary dedicated to Nuestra Señora del Carbayu, built in the 18th century, underwent successive remodelling at different times and may well have had a Romanesque origin.
It consists of a single rectangular nave, made up of three sections from different periods as a result of successive additions. It has an open portico on the north and south sides that rests on Tuscan sandstone columns.
Inside, the nave is covered with a false ceiling, while the first section of the chancel is covered with a ribbed groin vault, the second with a barrel vault with lunettes and the sacristy with a half-sphere dome decorated with paintings.
The façade is made of fine sandstone ashlar, the doorway is linteled with ear mouldings, flanked by fluted pilasters with a purist frieze of metopes and triglyphs, topped by a curved split pediment with a central niche containing the image of the Virgin.
The belfry has three levels: the first, as a plinth, is a blind body, the second has double arches for the belfry and is finished off with a third level with a semicircular opening that houses a third bell. The sides are finished off with slender pyramidal bodies.
San Luis was built as a vertical shaft promoted by the Real Compañía Asturiana de Minas, which changed the appearance and life in the Samuño river valley, in the heart of the Nalón mining basin, and almost a century later it is the setting for the Samuño Valley Eco-museum.Valle de Samuño Mining Ecomuseum 1.01 Kms Langreo