Church of San Mateo de Gállego Monument · San Mateo de Gállego, Comarca Central, Zaragoza Image of San Mateo de Gállego, not of the place itself. Church of San Mateo Apóstol, a 16th-century church (the choir and part of the tower date from 1580) that follows the type of fortress-church of Aragonese Mudéjar; its façade is considered one of the most richly decorated examples of Mudéjar in the region. Photo: Ajzh2074 (CC BY-SA 3.0 es) What to see and do in San Mateo de Gállego