Tower Life Building is a 31-story building and a historical landmark in Downtown San Antonio, Texas, U.S. Completed in 1929 and standing at 404 feet (123 m) tall, Tower Life Building was the tallest building and structure in San Antonio until the Tower of the Americas was completed in 1968, and the Marriott Rivercenter surpassed it as the tallest building in San Antonio in 1988. As of 2023, Tower Life Building is the 4th tallest building in San Antonio and the tallest eight-sided structure in the United States.