Historical Marker
117 First Street
Historical marker location:
117 1st Street, Pleasant Hill, Missouri
( Marker is on 1st Street north of Commercial Street, on the right when traveling north.)
Marker installed: 1992
Historic Building circa 1895.
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.