This is an impressive Romanesque temple which, although unfinished, has been declared a National Monument. It has three naves and a triple apse at the top end. Its entrance is magnificent with a relief of the Epiphany on the tympanum.
Inside, the decoration on the capitals is figurative, abstract and of immense value. The sculpture in the temple is said to have been done by the masters of the cloisters in the churches San Juan de la Peña and San Pedro del Viejo. All the different quarry marks on the stonemasonry lead us to believe that there must have been a great many workmen involved in this immense construction which, for various reasons, could not be terminated.
It is situated on the outskirts of the region and can be reached by a path, also used by vehicles.