GRAND MARAIS, Minn. — Waves crashed against Lake Superior's rocky, snow-covered shoreline. Just a few feet away, we sweated in a sauna, watching the frigid winter scene from a large picture window.
"It's magical," my mom said. "You basically are sitting right on the lake."
In swimsuits and sandals, we darted out of the 190-degree heat into the subfreezing temperatures as snow scrunched beneath our feet like sand at a beach. Seagulls flew over Adirondack chairs as a ship in the distance crawled across the icy waters of Lake Superior.
That picturesque northern Minnesota view is what sold Katie Usem on converting a century-old Norwegian fishing shack into a public year-round sauna along the world's largest freshwater lake. After she and her family moved from Chanhassen to Grand Marais during the COVID-19 pandemic, they opened Sisu and Löyly — tapping into a growing trend of saunas popping up across Minnesota.
"I wanted to find a way to bring a unique twist on this well established traditional practice," Usem said. "I'm biased but I think it's potentially the best view for a sauna in North America."
In the past few years, more than 20 sauna businesses have sprung up across the state, offering everything from mobile rentals delivered to your backyard to sauna sessions with lake vistas or skyline views. The growing movement is drawing people who are discovering — or rediscovering — the therapeutic heat of a sauna followed by a dip in a cold tub or lake.
"In Minnesota, in terms of the revival, this is the epicenter," said Glenn Auerbach of Minneapolis, a "sauna evangelist" who's written an e-book on building a sauna and founded the online Sauna Times. "This is the land of 10,000 lakes — and 10,000 cold plunges."
Of course, many people and cultures, from Native Americans to Finns, have ancient sweat traditions. But like the exploding wellness industry, saunas are, well, gaining steam.