Mudéjar architecture developed from the 12th to the 16th centuries, primarily using brick, plaster, and glazed ceramic tiles as principal materials. In the city of Teruel, the bell towers of San Martín and El Salvador demonstrate the fusion of Almohad geometric patterns with Romanesque structural forms. These structures are identified by their square footprints and the extensive use of green and white manganese-glazed tiles, which remain intact due to the region's dry, continental climate.
The style emerged from the work of Muslim craftsmen who remained in territories retaken by Christian kingdoms. Beyond religious sites, this influence extends to civil architecture across the Ebro valley and Castile. Local building regulations often mandate the preservation of these facades, particularly in UNESCO-protected zones. Internal features typically include artesonado ceilings, which are intricate, interlaced wooden structures designed to support heavy roof spans without the use of metal fasteners or stone vaulting.