One of the best views of the famous St. Louis Arch is from another state--Illinois! Just across the river is Malcom Martin Memorial Park sitting next to the still active Cargill plant. The park is not easy to find, but the effort is rewarding.
Visible from State Highway 67, and accessible via State Highway 32, the Federal Mill No. 3 is an imposing sight on an otherwise flat landscape. From a distance, the mine looks like any other industrial-era complex. The historic site is managed by the Missouri State Parks, and visitors can walk around the complex as well as visit a museum on site.
The next stop is the Miller Cave Complex, the only cave system on Fort Leonard Wood military base open to the public. The primary entrance to Miller Cave is located in a bluff approximately 150 feet above the Big Piney River. Miller Cave is particularly poignant as archaeological research and studies found evidence the cave was used as a Native American habitation site from 7000 BC to AD 1300.