This building originally served as the Hospital de los Betlemitas. Between 1692 and 1700, the church was built next to it, and in 1797, the façade was constructed. In 1820, the Order of Bethlehem was abolished along with other hospitaller orders. In 1908, it housed an institute until 1914, when it served as barracks, then as official schools, and since 1928 as the Headquarters of Arms. It is currently the Ignacio Zaragoza General Public Library.