High atop the Hewing Hotel in Minneapolis' North Loop sits a custom-built true dry sauna in the Nordic tradition, with three tiers of cedar benches and two windows framing the downtown skyline, paired with a heated outdoor rooftop spa pool open year-round. The rooftop is reserved for hotel guests, but a Rooftop Sauna & Spa Pool Day Pass is sold through Tock for Sunday to Thursday, 11 AM to 5 PM, for guests 21 and over, and Thermaculture hosts 90-minute guided sessions on Thursday evenings.