Stay at Furofushi Onsen in Aomori, where an hourglass-shaped mixed-gender outdoor bath sits right at the edge of the wild Sea of Japan. Full access & bathing guide.

Stay at Hikage Onsen, a modern hidden ryokan on the Akita-Aomori border. Milky white sulfur baths, private open-air pools, and refined Akita cuisine in deep snow country.

Stay at Nakadanasou in Komoro, Nagano — a historic ryokan famed for its seasonal apple bath, silky low-temperature spring, and refined kaiseki cuisine. Full access guide from Tokyo.

Jinsentei is a 500-year-old ryokan in Ikaho Onsen with rare Golden Spring water, four private baths, and Joshu wagyu dining — under 2 hours from Tokyo.

Yarimikan in Shinhotaka Onsen offers an open-air bath facing Mt. Yari, four private baths, and Hida wagyu dinner by an irori hearth in the Japanese Alps.

Hatcho-no-Yu is a secluded Nikko gem known for its waterfall views and natural hot springs. We cover everything from the clean, cozy rooms to the delicious Matsutake mushroom broth dinner.