Old Idaho Penitentiary - J. Curtis Earl Arms Collection

The story

In 1870, convicts in territorial Idaho were handed chisels and set to work quarrying sandstone out of nearby Table Rock to build their own cell walls. For over a century—until a 1973 riot finally shuttered the facility—the Old Idaho Penitentiary locked away Western desperadoes behind those hand-carved blocks. Ten men were executed here, six by hanging at the gallows in what is now, strangely enough, the Rose Garden. It stands today as a preserved complex of Romanesque stonework, iron bars, and solitary confinement cells.

Then there is the second half of the venue. Tucked inside the historic prison complex sits the J. Curtis Earl Memorial Exhibit of Arms and Armaments, a massive stockpile donated to the state by a single obsessive private collector. Earl amassed thousands of weaponry artifacts spanning three millennia—ranging from Bronze Age spearpoints and 18th-century combination hunting sword-pistols to brass-fitted Gatling guns, submachine guns, and a walk-through WWI replica trench.

If that combination weren't odd enough, the grounds also hold Idaho's piece of the 1949 French Merci Train—a wooden 40-and-8 boxcar sent by France as a post-WWII thank-you gift to the American people. You didn't hear it from us, but standing in a sunbaked 1870s sandstone prison yard while looking at a French gift railcar and thousands of antique machine guns feels like stepping into a fever dream of 20th-century history.