Rue de la Tour

Historical marker location:

100 S 4th St, Saint Louis, Missouri

( Marker is on South 4th Street south of Walnut Street, on the right when traveling north.)

Marker installed: 2014

Walnut Street

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.