San Antonio Missions
Mission Concepción is the oldest unrestored stone church in America. it was designated a National Historic Landmark on April 15, 1970 and is part of San Antonio Missions National Historical Park. In 2015, the United Nations Educational, Scientific, and Cultural Organization designated Concepción and four other San Antonio missions, including The Alamo, as a World Heritage Site, the first in Texas and one of twenty-three such establishments in the United States.