Excolegiata de Santa María, Briviesca

The former Collegiate Church of Santa María la Mayor is a Catholic temple, today lowered to the rank of church and closed to worship, in the town of Briviesca. It was founded in the second decade of the 14th century by the Infanta Blanca of Portugal, mistress of the Monastery of Santa María la Real de las Huelgas, daughter of King Alfonso III of Portugal and Beatriz of Castile. The building is an amalgam of different architectural styles, although its exterior is predominantly Baroque and Neoclassical. Declared an Asset of Cultural Interest with the category of National Historic-Artistic Monument in 1982, it is the first historical collegiate church in the Diocese of Burgos and one of the oldest in Spain.