San Jacinto Monument and Museum of History is at One Monument Cir. within the San Jacinto Battleground State Historic Site. Completed in 1939, the 570-foot limestone obelisk is said to be the world's tallest monument column. In the base of the monument, a museum depicts the region's history, from the Native American civilization found by Hernando Cortez through World War II. A multi-image, digital show depicting the Battle of San Jacinto and the Texas revolution is offered. The observation deck, 489 feet above the battlefield, offers a spectacular view of the battlefield grounds, Houston skyline and ship channel.