The tallest monument in the United States at 630 feet, built in St. Louis to honor America's westward expansion.
Why it matters
You can ride a tram to the top. Few monuments let you stand inside the idea they represent.
Nearby in Missouri
Missouri State Capitol
Jefferson City, MO
Harry S. Truman Presidential Library
Independence, MO
Mark Twain Boyhood Home and Museum
Hannibal, MO