Historical Marker
Moon Sycamore
Historical marker location:
1601 Main Street, Unionville, Missouri
( Marker can be reached from South 17th Street just north of Grant Street, on the left when traveling south.)
(<i>Plantanus occidentalis</i>).
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.