Hot springs in Wyoming

Wyoming keeps its hot springs the way it keeps everything else: concentrated, unpretentious, and shaped by geology you can feel. The state's thermal water clusters in two places — the Bighorn Basin around Thermopolis, home to the world's largest mineral hot spring, and the western ranges near Jackson — with a free riverside outlier in Saratoga holding down the south. What Wyoming lacks in quantity it makes up for in character.

Thermopolis is the undisputed capital. Hot Springs State Park gives the water away for free at the State Bath House — twenty minutes, no charge, a Wyoming tradition since the park's founding. Around it cluster the commercial soakers: Hellie's Teepee Pools, the Fountain of Youth's giant mineral pool, and hotel spas all drinking from the same Big Spring source, which surfaces at a steady 135°F and something like 8,000 gallons a minute.

Saratoga, two hours south, runs on a different rhythm. The Saratoga Hot Springs Resort anchors one end of town; the Hobo Pool — two free, open-air riverside pools on the North Platte — anchors the other. It's open 24 hours, it's free, and on a winter night with steam rising off 106°F water while the river runs black beside you, it's one of the great free soaks in America.

Practical notes: winter is magnificent and uncrowded — Thermopolis and Saratoga both soak year-round, and snow on the ground only improves the water. Summer brings families and RV traffic; book lodging ahead in Thermopolis. And the obvious warning, stated once: Yellowstone's thermal features are spectacular and absolutely not for soaking. Everything listed here is outside the parks and legal to enjoy.