Church of San Esteban de Sos del Rey Católico Monument · Sos del Rey Católico, Cinco Villas, Zaragoza Church with a Romanesque doorway and the baptismal font where Ferdinand the Catholic was baptised. The building, in Gothic style, with ashlar stone walls and vaults, has the peculiarity of standing over another underground temple, the church of the Virgen del Perdón, with a public street running between the two levels. It was declared a historic-artistic monument in 1944 and enjoys the protection of a Bien de Interés Cultural (Spain's highest level of heritage protection). Photo: Zarateman (CC0) What to see and do in Sos del Rey Católico