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The sandstone walls and cell houses of the Old Idaho Penitentiary seen from the foothill slope abovemark6mauno / CC BY-SA 2.0 via Wikimedia Commons
🏛️Historical

Old Idaho Penitentiary

Part ofBoise, the Treasure Valley & the Owyhees
On this driveI-84: The Farewell Bend Crossing

A territorial prison that ran for 101 years on conditions that barely changed, and closed the year its prisoners burned it.

Photography
⏱
Duration
An hour and a half for the yard, the cell houses and the women's ward.
📅
Best Season
Year round.

The Story

The Territorial Prison opened east of Boise in 1872 with a single cell house and eleven men sent over from the Boise County jail. It was put at the foot of the foothills for a practical reason: the Table Rock sandstone quarry was a short walk uphill, and prisoners could cut the stone themselves. Over the following decades they built most of what stands inside the wall, down to a dining hall one of them designed.

What they did not get, for most of a century, was much else. The New Cell House of 1889 held three tiers of steel cells, the top tier nearest the gallows yard serving as death row. In the North Wing, finished ten years later, each two-man cell had a bucket for a toilet. There was no real heating or cooling in a city of hundred-degree summers and hard winters, and the aging water system was unsanitary. Prisoners rioted over it in 1952, again in 1971, and in March 1973, when they burned the old territorial cell house, then serving as a chapel, the dining hall and the North Wing.

That was the end. The state moved its 416 remaining prisoners to a new institution south of Boise, and the Old Pen closed on December 3, 1973. In 101 years it had held more than thirteen thousand people, 215 of them women. Its best-known prisoner, Harry Orchard, confessed to the 1905 bombing that killed former governor Frank Steunenberg and spent the rest of his life here.

The Idaho State Historical Society runs it now. Visitors walk the yard, the cell houses, the solitary cells and the women's ward, and the fire damage of 1973 is still on the walls. The Idaho Botanical Garden grows on the prison's old farm next door.

Visitor Info

⏱
Time Needed
An hour and a half for the yard, the cell houses and the women's ward.
📅
Best Season
Year round.
🛣️
Highway
Warm Springs Avenue, east Boise

On the Map

Nearby

The closest stops worth working into your route

architectural2.2 mi away
Idaho State Capitol
Walls hauled from the prison quarry, heat pumped from 3,000 feet down, and its newest rooms built underground.
cultural2.2 mi away
Basque Block
A merchant's 1864 brick house became the boardinghouse where herders from the Basque Country found beds, meals and their own language.
natural7.5 mi away
World Center for Birds of Prey
The hilltop where the peregrine falcon was bred back from DDT, and where condors for the Grand Canyon country still hatch.
historical23 mi away
Pon Yam House
The store of Idaho City's king merchant, where the Chinese of the Boise Basin bought cuttlefish, incense and firecrackers.
recreational33 mi away
Banks and the North Fork Payette
Where the Payette's two forks meet, below fifteen miles of continuous Class V whitewater beside the highway.
natural45 mi away
Kirkham Hot Springs
Hot water pours off a ledge into pools at the edge of the South Fork Payette, a staircase down from the highway.

Historical markers nearby

Roadside plaques and monuments within a short detour

Marker4.7 mi away
Beaver Dick's Ferry
Marker4.7 mi away
The Oregon Trail
Marker5.6 mi away
Diversion Dam
Marker8.2 mi away
Arrowrock Dam
Marker8.2 mi away
More's Creek
Marker8.9 mi away
The Old Toll Road