Historical Marker
Trenton
Historical marker location:
700 Main Street, Trenton, Missouri
( Marker is on Main Street (State Highway 6) just north of East 7th Street, on the right when traveling north.)
Marker installed: 1953
The Missouri State Penitentiary, located in Jefferson City, was once the oldest operating prison west of the Mississippi River. It opened in 1836 and closed in 2004.