Old Idaho State Penitentiary was a great place to visit. Me and my two oldest children went in August but on Friday the 13th which they had a special tour that night which told of the haunts and ghosts. the next day I took the regular tour which was fantastic as well. please see below for history courtesy of the Historical Society.
The Old Idaho Penitentiary State Historical Site was a functioning prison for 101 years. It was built in 1870 and the first prisoners were brought in 1872. The buildings on the site were built by inmate laborers. The Old Idaho Penitentiary grew from a single cell house into a complex of several buildings holding Idaho's most notorious criminals. The Old Pen received over 13,000 inmates with a maximum population of 603 inmates. There were 222 women inmates (including repeat offenders.) The Old Pen is open throughout the year and is located at 2445 Old Penitentiary Road, Boise, Idaho 83712.