The Outlaw Trail Ended Here!

Prison photo


No need to commit a crime to do time at the territorial prison. Listed on the National Register of Historic Places, explore this 1872 imposing stone structure that held “evil doers of all classes and kinds.”  Built as a federal prison (1872-1890), it later became Wyoming’s state penitentiary (1890-1903). During these years, 1,063 malicious convicts walked through the iron doors and occupied the cells.

We are open!! Hours: May 1 – September 30 8am to 7pm, Daily ( Last ticket sold 6pm) 

Open on Memorial Day, Independence Day and Labor Day

 Easy To Find Us!  Located just off Interstate 80 at exit 311.

 975 Snowy Range Road Laramie, WY 82070     (307) 745-3733

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 Bad Boys Behind Bars!


Supported by the Wyoming Territorial Prison Historic Association and  Wyoming State Parks & Cultural Resources