Idaho's abandoned landscape is defined by silver and gold — the mining booms of the 1870s-1890s built entire cities in mountain canyons and then emptied them within a generation when the ore ran out. The most intact silver mining ghost town west of the Mississippi. A complete mining city of 10,000 reduced to ruins in the Bitterroot Mountains. WWII Japanese American internment camp ruins in the high desert. Here are 5 of the best abandoned places in Idaho, selected from our Abandoned Places Map USA — 5,000+ GPS locations across the United States.
Why Idaho Is a Hidden Gem for Abandoned Buildings & Urban Exploration
Idaho's mining ghost towns are among the finest in the American West — the high-altitude dry climate preserves wooden structures for over a century, and the remoteness of the Salmon River Mountains and Custer County canyons has kept them largely undisturbed. The state also carries a layer of WWII history that most Americans don't associate with Idaho.
1. Bayhorse Ghost Town – 1877 Silver Mining Town, One of the Most Intact Ghost Towns West of the Mississippi, Custer County (Known Location)
Founded in 1877 when silver was discovered in a narrow canyon of the Salmon River Mountains, Bayhorse peaked in 1885 with around 300 residents supporting a stamp mill, five saloons, a hotel, school and smelter. Silver mining ceased in 1915 when the ore played out; the last permanent resident left in 1958. What remains is extraordinary — original wooden buildings still standing with mill machinery in place inside, the smelter ruins visible up the canyon and the ghost town structures in a state of preservation that reflects both the dry mountain climate and the site's remoteness. Part of the Land of the Yankee Fork State Park since 2006. One of the most intact and least commercialized abandoned silver mining towns in the American West.
🔗 Learn more: Wikipedia – Bayhorse, Idaho
2. Custer Ghost Town – 1879 Gold Mining City, Dredge Still Standing on the Yankee Fork, Land of the Yankee Fork State Park (Known Location)
Founded in 1879 when gold was discovered on the Yankee Fork of the Salmon River, Custer grew to support mills, stores, saloons and a school before the gold ran out in the early 1900s. The town site and the massive Yankee Fork Gold Dredge — a 988-ton floating dredge that worked the river from 1940 to 1952, leaving behind the distinctive gravel tailings piles that still scar the valley — are both preserved in the Land of the Yankee Fork State Park. One of the best abandoned places in Idaho for gold dredge industrial history combined with a genuine 1870s ghost town setting. The dredge itself is among the most impressive surviving gold dredges in the American West.
🔗 Also read: Top 5 Best Abandoned Places in the USA →
3. Minidoka Internment Camp – 1942 WWII Japanese American Incarceration Site, Barracks Foundations and Guard Tower Still Standing, Twin Falls County (Exclusively on Our Map)
From 1942 to 1945, the Minidoka War Relocation Center in the Snake River Plain held over 9,000 Japanese Americans forcibly removed from the Pacific Coast under Executive Order 9066 — the largest internment site in the American interior. The barracks have been removed but the original site layout, the entry station, the cemetery and guard tower remains are preserved as Minidoka National Historic Site in Twin Falls County. One of the most historically significant and most emotionally weighted abandoned places in Idaho — a reminder that the WWII home front included forced incarceration of American citizens on Idaho desert. Exact location available on our Abandoned Places Map USA.
4. Abandoned Coeur d'Alene Mining District Mill – 1890s Silver Processing Facility with Ore Car Rails Still in Place, Shoshone County (Exclusively on Our Map)
A 1890s silver ore processing mill in the Coeur d'Alene Mining District — one of the richest silver mining regions in American history, the source of over a billion dollars in silver since the 1880s. The ore car rails still embedded in the mill floor, the concentrating tables and crushing machinery partially in place and the distinctive multi-story timber construction of a late Victorian ore mill preserved by the dry Idaho mountain climate. The Coeur d'Alene district's mining history is among the most dramatic in the West; this mill is one of the best abandoned places in Idaho for silver era industrial archaeology. Exact location available on our Abandoned Places Map USA.
5. Abandoned Snake River Homestead – 1910s Dry-Land Farm with Original Barn and Root Cellar Still Standing, Owyhee County (Exclusively on Our Map)
A 1910s homestead in the Snake River high desert of Owyhee County — the main farmhouse still structurally intact with original windows, a timber barn with hay loft open to the sky and the stone root cellar dug into the desert hillside with its arched entrance perfectly preserved. The federal Homestead Act brought thousands of settlers to Idaho's high desert in the 1900s-1910s; most found the land too arid for dryland farming and abandoned their claims within a decade, leaving homesteads like this one scattered across the Owyhee plateau. Exact location available on our Abandoned Places Map USA.
Safety Tips for Urban Exploration in Idaho
- Remote mountain sites: Bayhorse and Custer are deep in the Salmon River Mountains — always carry a map, bear spray, emergency supplies and let someone know your return time
- Abandoned mine shafts: the Coeur d'Alene and Custer County mining districts are riddled with open shafts — never approach unmarked holes and stay on established paths around all mining sites
- Never explore alone — always bring at least one other person and let someone know your location
The urbex code applies everywhere: "Take nothing but photographs, leave nothing but footprints."
❓ FAQ – Abandoned Places in Idaho
What is the most famous abandoned place in Idaho?
Bayhorse Ghost Town in Custer County — an 1877 silver mining town considered one of the most intact ghost towns west of the Mississippi, with original wooden buildings still standing and mill machinery still in place inside. Part of the Land of the Yankee Fork State Park since 2006.
What is the Yankee Fork Gold Dredge at Custer?
A 988-ton floating gold dredge that worked the Yankee Fork of the Salmon River from 1940 to 1952, leaving behind distinctive gravel tailings piles that still scar the valley. The dredge itself is preserved at the Land of the Yankee Fork State Park near Custer and is one of the largest surviving gold dredges in the American West.
What was the Minidoka internment camp?
The Minidoka War Relocation Center in Twin Falls County held over 9,000 Japanese Americans from 1942 to 1945, forcibly removed from the Pacific Coast under Executive Order 9066. Now Minidoka National Historic Site, the entry station, guard tower and original camp layout are preserved on the Snake River Plain high desert.
🎯 Summary
Idaho's abandoned buildings span from the most intact silver mining ghost town west of the Mississippi to a WWII incarceration camp on the Snake River desert and gold dredge ruins in a canyon carved by miners a century ago. Each of these 5 abandoned places in Idaho captures a different dimension of a state shaped by the ore beneath its mountains and the history that ore set in motion.
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