The San Jacinto Monument is a 567.31-foot (172.92 m) high column located on the Houston Ship Channel in unincorporated Harris County, Texas, United States, near the city of La Porte. The monument is topped with a 220-ton star that commemorates the site of the Battle of San Jacinto, the decisive battle of the Texas Revolution. The monument, constructed between 1936 and 1939 and dedicated on April 21, 1939, is the world's tallest masonry column and is part of the San Jacinto Battleground State Historic Site. By comparison, the Washington Monument is 554.612 feet (169.046 m) tall. The column is an octagonal shaft topped with a 34-foot (10 m) Lone Star – the symbol of Texas.