The Jesuit Block and Estancias of Córdoba (Spanish: Manzana Jesuítica y Estancias de Córdoba) are a former Jesuit reduction built by missionaries in the province of Córdoba, Argentina, named a World Heritage Site in 2000. The Manzana Jesuítica contains the University of Córdoba, one of the oldest in South America, the Monserrat Secondary School, a church, and residence buildings. To maintain such a project, the Jesuits operated six Estancias (residences) around the province of Córdoba, named , Jesús María, Santa Catalina, Alta Gracia, Candelaria, and San Ignacio.