This spot is so bizarre and frankly so cool that we had to do a deeper dive—read the full story of the Cannibal Hot Tub here. But the short version is that Ukrainian hotelier Anatoliy Zaika wanted to recreate the soaking experiences of his native Carpathian Mountains, so he had a giant cauldron shipped from Ukraine and installed it in his small resort near Mount Rainier. The wood fire below provides the heat and the cannibal connotations, and the family's bakery has post-soak treats. It's a worthy day trip to the foothills of Rainier, worth the $140 rental fee in novelty alone.

Best known for lightweight, Japanese-style camping gear—there's a physical shop in Portland—Snow Peak pivoted last year to open a campground in Long Beach, about a mile inland from the waves, offering tents and even small wood cabins as accommodations, with a wash house and indoor gathering space to upgrade the camping experience.

But the property highlight is the Ofuro spa, a semi-outdoor space with three walls and a roof but one open-air side. A sizable warm soaking pool provides escape from blustery Washington beach weather, and a large sauna includes a window out onto the trees. Kids over 6 are allowed, and the airy space keeps it chill even when people are talking. Day passes ($35) are reservable up to three days in advance and the last session of the day is adults only.

With a loving renovation of the state's oldest hotel (that made our best hotels in Washington list) and a funky Southern-inspired restaurant (that made our best restaurants in Washington list), Tokeland Hotel is already bringing a lot to a tiny tidal community in the southwest corner of the state. But owner Heather Earnhardt did not rest on her laurels, adding a guests-only wood-fired hot tub on a raised platform in the brushy fields around the historic structure. A cold plunge joined soon after, and this year another hot tub will go up nearby, as well as wood-fired saunas throughout the property. There is truly no reason to leave.

This outdoor hydrotherapy outfit found the perfect location in the outdoorsy Bavarian town, wedged between the KOA campground and the new climbing gym. Marco Scheuer and Vincent LaBelle built a small network of pools and a sauna, turning the plot of land into a hangout ideal for post-ski, post-climbing, or just post-bratwurst recovery.

Scheuer already envisions a second sauna and more pools in phase two; snow fills the spaces between the walkways and firepit in winter, though the pair is considering a snow maker for when Mother Nature doesn’t do her duty. The space is evidence that Leavenworth can no longer be considered pure kitsch. Between these new pools and the elegant spa at Posthotel—whose outdoor pools have five-star swagger—this is a soaking town too.