We left our hotel around 11:30 and decided to grab lunch before making our way over to the San Jacinto Monument. Standing 567.31 feet tall, it commemorates the site of the Battle of San Jacinto, a decisive battle of the Texas Revolution. It was constructed between 1936-1939 and is the world's tallest masonry column. By comparison, the Washington Monument is 555.427 feet tall. We toured the museum at the base of the monument and then took the elevator up to the observation deck, 489 feet up.