The Church and Convent of San Agustín, founded in 1653 by the Augustinian order, served as a religious and educational center in colonial Santiago de los Caballeros. Renowned for its Baroque and Renaissance design, it housed an influential library and art workshops. The devastating earthquakes of 1715 and 1773 led to its abandonment after the capital's relocation. Today, its ruins remain a historical landmark, steeped in legends of spectral chants and memories of devotion and sacrifice.