The San Jacinto Monument is 567.31-foot (172.92 m) high, and is located on the Houston Ship Channel near the city of La Porte. The monument is topped with a 220-ton Lone Star which is the symble of Texas, and comemorates the Battle of San Jacinto, the decisive battle of the Texas Revolutionary War. Constructed between 1936 and 1939 and dedicated on April 21, 1939, it is the world's tallest monumental column and is part of the San Jacinto Battleground State Historic Site. By comparison, the Washington Monument is 555.427 feet (169.294 m) tall. The column is an octagonal shaft faced with Texas Cordova shellstone, topped with a 34-foot (10 m) Lone Star—the symbol of Texas. Visitors can take an elevator to the monument's observation deck for a view of surounding area.