Formerly a Catholic church, and no longer a place of worship, Neoclassical style with a single nave, it was built entirely of brick in the XVI and XVII centuries, though the bell tower, attached to the north wall, corresponds to a building prior to the XIII century. Master Castro Sandoval, parish priest of La Trinidad, together with the stonemason Juan de Escobar, decided to rebuild part of the church. Lucas González, a sculptor from Rioseco, made the main altarpiece. The sculptor from Villada, Santiago Carnicero, was to reform the altarpiece as it had been badly designed. It ceased to be a place of worship in 1964.
Some information indicates that the church received relics of San Juan de Sahagún after his beatification and was used to worship the patron saint of the town until his own temple was built; which is logical as the saint was baptised in this parish.

Its Churrigueresque altarpiece is now in the Benedictine Mothers church. Currently, a pilgrims hostel, Tourist Office and also the ‘Carmelo Gómez’ Municipal Auditorium.
The Auditorium occupies most of the church and is used for conferences, concerts and exhibitions. It is named the Auditorio Carmelo Gómez, in honour of the film actor who was born in Sahagún.