from sinkholes. Main sights One of the most notable Mudéjar towers of Aragón is the 15th-century bell tower of the collegiate church of Santa María, which was built on the site of a mosque. A Renaissance doorway was added in 1528. Santo Sepulcro, built in 1141, and restored in 1613, was long the principal church of the Spanish Knights Templar. This qalʿat is the biggest and oldest one on the Iberian peninsula. The church of "San Pedro" was founded by Ferdinand II of Aragón and it was there that the first cortes (parliament) of Aragon was held in 1411. Economy The majority of employment is in the service sector and in agriculture. Agriculture consists primarily of apple and pear orchards, although there are also some vineyards in the area). Industry is much less developed, although there are two industrial estates (La Charluca and Mediavega) and the creation of a third is being studied. Quarters and villages Quarters: Huérmeda, Torres and Embid de la Ribera Villages: Campiel, Carramolina, Marivella, Ribota, San Ramón and Terrer Fiestas Easter Pilgrimage (romeria) in honour of el Cristo de Ribota, May 1 Saint Íñigo's Day, June 1 Saint Roch's Day, August 14–16 Virgen de la Peña, September 8–12 Traditions There is a popular Spanish song that says (translated) "If you go to Calatayud / ask for Dolores (a popular female name) / she is a very nice girl / fond of granting favours" that captures the (traditional) fame of girls in Calatayud. Given that reputation, traditionally boys went to the town in order to "ask for Dolores" to be "favoured" by local girls. Nowadays this tradition has dismissed although in festivities, boys from the surroundings, even from Zaragoza, visit the town with that aim. Sister City Calatayud has four sister cities.: Dueville, Veneto Gáldar, Gran Canaria Glen Ellyn, Illinois Auch, Gascony See also List of municipalities in Zaragoza Calatayud (DO) Mudéjar Comunidad de Calatayud Glen Ellyn (sister city) Santuario de la Virgen de la Peña, Calatayud References External links City website Local wines Municipalities in the Province of Zaragoza Bien de Interés Cultural landmarks in the Province of Zaragoza