Pettis County Courthouse

Historical marker location:

415 South Ohio Avenue, Sedalia, Missouri

( Marker is on Ohio Avenue (Missouri Route 750) south of 4th Street, on the left when traveling south.)

Marker installed: 1924

The Gateway Arch, located in St. Louis, is the tallest arch in the world, standing 630 feet tall. It was built as a monument to the westward expansion of the United States and opened to the public in 1967.