DULUTH – It was 8 degrees below zero and the windchill was even colder, but Brittney Merlot wore a tank top inside the igloo-like structure next to Lake Superior.
"It's almost magical," Merlot said, as billowing steam collided with a wall of ice. The thermometer on the wall read 80 degrees.
A small business in Duluth built a rare ice sauna in early February next to its traditional wood-fired Finnish sauna in Canal Park. It was one of many ideas Justin Juntunen, founder of Cedar & Stone Nordic Sauna, lists when describing his dream to turn Duluth into "the sauna capital of North America."
Juntunen grew up in nearby Esko, where his family embraced their Finnish heritage by building saunas at their homes and cabins.
Saunas have become increasingly popular in recent years across Minnesota and the United States, particularly among millennials. A 2018 Mayo Clinic study links regular sauna use to a slew of health benefits, including reduced risk of heart disease, strokes and the flu.
"Science is backing up the things my grandma and grandpa used to say," Juntunen said.
He thinks saunas could be the next exploding trend, mimicking the booms of yoga and craft brewing. In addition to its Canal Park facility, Cedar & Stone also builds custom saunas for homes or businesses and sells curated sauna products imported from around the world (favorites include stoves from Estonia and bucket-ladle sets from Finland).
Juntunen, 35, went to college in the Twin Cities and got a job in higher education in the Pittsburgh area for a few years. He returned to the Duluth area in 2011 — but first he and his wife took a trip to Finland, with a list of public and community saunas on their itinerary.