During the War for Texas Independence, Santa Anna (now the Mexican president and general-in-chief) camped in the future site of the town prior to making his final march on the Alamo. This spot is marked by the "Santa Anna Oak," a large live oak under which the general encamped. The tree is 12 ft. in diameter at the base and has been estimated by UTSA as over 600 years old. The site is now inhabited by the Alamo River Resort, a camping and fishing park. At 2:00am on June 16, 2021, the tree collapsed into 3 different sections.