Church of Val de San Martín Monument · Val de San Martín, Campo de Daroca, Zaragoza Church of San Blas de Val de San Martín, with a 13th-century Romanesque apse and a three-bay nave covered with ribbed vaulting built around the 14th-15th centuries; the brick tower dates from the 18th century. Photo: Jaime Calatayud (CC BY-SA 4.0) What to see and do in Val de San Martín