The southernmost mission in San Antonio Missions National Historical Park, Mission Espada was established in 1731 and boasts the best-preserved segment of the area’s original irrigation system that was used to bring water to the fields. In 1826, a fire destroyed most of the mission buildings at Espada, with only the chapel, granary, and two of the compound walls remaining. Today, part of the original irrigation system still operates the Espada aqueduct and dam. The aqueduct was built between1740 and 1745.