This church of Sant Serni was built between 1758 and 1768; Master builder Pere Moles and Francesc Porta from La Seu d’Urgell oversaw it. It was dedicated to the Sant Serni and it came to recognition on 1099 and later in 14 century it houses Gothic style cross made of polychrome wood as a well as the number of Baroque alter pieces.The church is a historic quarter of Canillo and visitors can explore its surround by revealing some of the town exceptional old houses.