Question: when was the mission san antonio de valero built?
Answer: 1718, the 18th century

The Alamo The chapel of the Alamo Mission is known as the '' Shrine of Texas Liberty '' Location of The Alamo in Texas Location 300 Alamo Plaza San Antonio , Texas USA Coordinates 29 ° 25 ' 33 '' N 98 ° 29 ' 10 '' W ﻿ / ﻿ 29.42583 ° N 98.48611 ° W ﻿ / 29.42583 ; - 98.48611 Coordinates : 29 ° 25 ' 33 '' N 98 ° 29 ' 10 '' W ﻿ / ﻿ 29.42583 ° N 98.48611 ° W ﻿ / 29.42583 ; - 98.48611 Name as founded Misión San Antonio de Valero Patron Anthony of Padua Founding priest ( s ) Antonio de San Buenaventura y Olivare Area 5 acres ( 2.0 ha ) Built 1718 Native tribe ( s ) Spanish name ( s ) Coahuiltecans Governing body Texas General Land Office UNESCO World Heritage Site Type Cultural Criteria ii Designated 2015 ( 39th session ) Part of San Antonio Missions Reference no . 1466 State Party United States Region Europe and North America U.S. National Register of Historic Places Designated October 15 , 1966 Reference no . 66000808 U.S. National Historic Landmark Designated December 19 , 1960 U.S. Historic district Contributing property Designated July 13 , 1977 Part of Alamo Plaza Historic District Reference no . 77001425 Texas State Antiquities Landmark Designated June 28 , 1983 Reference no . 8200001755