SaunaNews
The Sauna Industry's Record of Note
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Portal Thermaculture opened its fourth US club in Bozeman, Montana, on March 17, 2026. The company has gone from Boulder pop-ups to brick-and-mortar clubs in Denver, Minneapolis, and now Bozeman in roughly 14 months, with no disclosed outside investors and a two-building layout designed to keep buildout costs far below the $3 million to $5 million custom-bathhouse norm.
Tuli Lodge opened its third Seattle pop-up at Vulcan Real Estate’s Lake Union Piers, a 60,000-square-foot waterfront development. The move signals that developers are treating sauna as a pre-lease activation tool, a third capital model alongside venture-backed flagships and bootstrapped chains.
Portal° Thermaculture started behind a Boulder brewery, burned down, reopened in Denver six weeks later, and built its first real brick-and-mortar in a former Minneapolis Jiffy Lube cooled by a chiller designed for penguin tanks. Five metros, no disclosed investors, and a founder who says people need “a dive bar that doesn’t serve alcohol.”