Arroyo Seco is one of the 18 municipalities of the Mexican state of Querétaro, in the region of Sierra Gorda. Its name means "dry creek" in Spanish; however, from 1833 to 1840 it was known as Villa de Guadalupe. The first Spanish settlement was San Nicolás Concá, founded between 1533 and 1538. The mission of San Miguel de Concá is located here, which is one of the Franciscan Missions in the Sierra Gorda declared a World Heritage Site by the UNESCO in 2003. Population (2000): 12 672, Area: 725 km². External links
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