Yamagata Tsuruoka City
A hotel floating above the rice fields, featuring a natural hot spring fed directly from the source and designer saunas
"Shonai Hotel Suiden Terrasse" is a hotel in Tsuruoka City, Yamagata Prefecture, reserved exclusively for overnight guests. The wooden architecture, designed by world-renowned architect Shigeru Ban, stands as if floating above the rice fields and blends beautifully with the changing seasons. Inside, there are three bathing areas with distinct atmospheres, and the natural hot spring, fed directly from the source, warms you through to the core. The designer sauna, with its striking hexagonal design and paper-tube benches, lets you enjoy your preferred level of heat and steam with self-löyly. Cool off in the cold plunge bath, then feel the breeze in the outdoor relaxation area overlooking the water features and rural scenery for a deeply relaxing experience. A fitness gym and library are also available, making for a luxurious stay that restores both body and mind.

A large bathhouse with striking blue tiles reminiscent of a clear, sunny sky. The natural hot spring, fed directly from the source, is a chloride spring with excellent heat retention, so the warmth lingers even after you get out of the bath. In the open-air bath, you can look out at the surrounding mountains and sky between the ceiling and the tub, and enjoy a leisurely soak while listening to the sounds of insects and feeling the pleasant breeze.

A dreamlike large bathhouse distinguished by its soft white walls, with moonlight illuminating the tub at night. The natural hot spring, fed directly from the source, flows generously, and its gentle texture softly melts away fatigue throughout the body. From the open-air bath, you can look out over the beautiful water feature and savor a quiet, luxurious time relaxing while watching the scenery change with the time of day and the seasons.

An indoor-only bathhouse with lovely pale pink tiles and a beautifully crafted wooden hexagonal ceiling. The high-quality natural hot spring, fed directly from the source, is abundantly filled and warms you thoroughly from the core. Soft natural light pours in through the skylights during the day, and at night you can look up at the stars and fully enjoy a blissful soak in a calm, private space.

This designer sauna features a beautiful wooden space unified by a hexagonal form. Natural light from the skylights gently illuminates the room, creating a quiet and calming atmosphere. Self-löyly is available, and pouring water over the sauna stones releases pleasant heat and steam that envelops your whole body. The movable chairs can also be adjusted to your preferred height, which is a nice touch. Through the windows, peaceful rural scenery spreads out before you, letting you work up a good sweat while enjoying the view.

A stylish sauna room that stands out with benches modeled after the paper tubes that are one of the architect's signature elements. The large windows open onto a water feature and the sky, creating an airy space where you can refresh yourself. The steam rising from self-löyly brings comfortable warmth, gently heating you from the inside out. In the quiet, you can listen to the sound of water and forget the bustle of everyday life as you sink into a deep sense of immersion.

A cold plunge bath that gently cools your body after a thorough sauna session. Its clear chill feels wonderful and quickly soothes away the heat. When you step out, an open-air relaxation space awaits, with a water feature and peaceful rural scenery spread out before you. Enjoy a blissful totonou moment while taking in the beautiful landscape created by the sky and nature and feeling the pleasant breeze.
Availability and rates are shown on each booking site.
This page contains affiliate links. Booking through them costs you nothing extra.
Open Year-Round

Yamagata
A rustic open-air bath where you can feel Zao's strongest acidic milky-white hot spring and the mountain breeze

Yamagata
Supreme 100% free-flowing cloudy hot spring with the mountain ranges of Zao and the scent of sulfur

Yamagata
Japan's first onigiri-shaped wood-fired sauna and the renowned free-flowing hot spring with the largest volume of water in Tohoku
JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
61 SELECTIONS
Most of what we surveyed never even made it onto this site. This book is a further cut from what did. Our editor bathed in every onsen and sauna in it, and wrote only what they confirmed on the ground.