A magnificent building of Visigothic origin, the first Benedictine monastery in the Hispanic March. The current construction corresponds to the church consecrated in 1040; it consists of three naves, a central apse and three apses in the shape of a cloverleaf alluding to the Trinity.  It is said that Bishop Fèlix d'Urgell studied there, which caused the monastery to be associated with the adoptionist heresy of the time. In 1040, the church was renovated and reconsecrated. Currently, once restored, the view from the temple's head is impressive.