Hokkaido Kushiro City
An upscale resort where you can fully enjoy the breathtaking views of Lake Akan and natural hot springs
"Akanko Yuku no Sato Tsuruga" is a hot spring ryokan in Kushiro, Hokkaido. Located in an excellent spot overlooking Lake Akan and the Akan Mountain Range, it offers a variety of bathing facilities that let guests feel at one with the great outdoors. At the world’s first dome-shaped observatory sauna, you can enjoy a 360-degree panorama while savoring self-löyly. It also features an authentic Finnish-style sauna and a gentle cold plunge bath made with Akan Hyakunensui. Natural hot spring water drawn directly from the source gently soothes both body and mind. With additional facilities such as bedrock bathing and esthetics, it delivers a blissful wellness stay that helps you forget everyday life.

A spacious observatory large public bath and sky-open-air bath located on the 8th floor of the main building. You can enjoy a magnificent bath under the open sky while looking out over the vast panorama of eastern Hokkaido, with Lake Akan and the Akan Mountain Range spread before you. The high-quality hot spring water, with excellent heat-retaining properties, gently moisturizes the skin and allows you to spend a blissful time easing both body and mind while feeling the breath of nature.

Tsuruga’s proud, expansive large public bath, spanning from the 1st floor of the main building down to the basement. It includes a garden open-air bath where you can feel a sense of unity with Lake Akan, along with a variety of baths with different atmospheres. The abundant, high-quality hot spring water flows freely, letting you enjoy bath-hopping in a graceful Japanese setting. This superb hot spring experience offers gentle water for the skin and leads you to true relaxation.

A spacious large public bath centered on indoor baths, with baths named after Ainu terms such as "Matne-shiri," meaning Mount Meakan in Ainu. Ainu stories are depicted on the walls, allowing you to bathe while feeling the culture unique to this land. The superb spring quality of the sodium, magnesium, calcium bicarbonate hot spring gently glides over the skin, and you can refresh to your heart’s content in a quiet, calm space.

A private rental bath where you can enjoy the hot spring comfortably without worrying about other people’s eyes. Together with your family or loved ones, you can savor the high-quality water at a relaxed pace. In a quiet, serene atmosphere, you can spend a special bathing time just for yourselves, free from interruption, and enjoy true comfort.

A luxurious open-air bath installed exclusively in the guest room. You can enjoy the hot spring as often as you like, whenever you like, while taking in the beautiful seasonal scenery of Akan. The private time of soaking while feeling the natural breeze is exceptional, promising an upscale resort stay free from interruption. It creates an unforgettable stay, combining high-quality water with spectacular views.

A world-first dome-shaped sauna with insulating double-glazed glass, installed on the rooftop. Its 360-degree all-glass design lets guests bathe while taking in Akan’s majestic nature by day and the beautiful starry sky by night. With self-löyly using aromatherapy water, you can adjust the humidity to your liking and enjoy an exceptional sense of immersion and deep relaxation, as if you were wrapped in nature itself.

An authentic Finnish-style sauna carefully designed in every detail, from lighting and fragrance to humidity and decor. The monochrome stone materials and blackout ceiling create a simple, modern meditation space. A periodically activated mist function and aroma oils provide soothing aromatherapy, while the curved seating allows you to relax deeply in body and mind.

A skin-friendly mist sauna filled with fine steam throughout the room. Gentle heat and rich humidity envelop the entire body, allowing you to warm up slowly without feeling stifled. Even if you do not enjoy the intense heat of a dry sauna, you can still feel comfortable here, and the moisture-rich steam gently hydrates the skin and hair for a soothing refreshment space.

An authentic Finnish-style sauna with a quiet, cave-inspired atmosphere. The soft glow of indirect lighting enhances the healing effect, while regular auto-mist and aromatic scents gently surround the room. The specially designed seating with angled backrests makes breathing easier and encourages effective sweating. It offers a refined environment where you can step away from the noise of everyday life and quietly face yourself.

A classic high-temperature dry sauna that delivers a strong sense of heat. In the low-humidity room, your body temperature rises quickly and refreshing sweat pours out from all over. Circulation is promoted, helping you clear away accumulated fatigue. It offers a quintessential sauna experience, ideal when you want to warm up thoroughly with powerful heat.

A sauna located inside the large public bath, which features stories from Ainu folklore. Used together with a hot spring bath, it can help promote more effective sweating and circulation. After warming your body thoroughly, you can cool down at a relaxed pace in the spacious bath area and enjoy a blissful moment that eases both body and mind.

A cold plunge bath lavishly using Akan Hyakunensui, spring water nurtured over many years by the forests of Akan. Its soft, gentle quality, characteristic of groundwater, cools the body heated by the sauna in a mild yet crisp way. The water is extremely soft on the skin, with a refreshing coolness that still feels pleasant. Wrapped in this superb water, you can experience the ultimate cool-down.

A full-featured bedrock bathing area where alternating between warming and cooling helps you work up high-quality sweat. Guests can use it together in special attire, and move through a variety of spaces such as high- and low-temperature bedrock baths, a spacious bedrock lounge, and a cool room. Far-infrared rays emitted by natural stones warm you from the core, allowing you to enjoy detox time away from the bustle of daily life and quietly face yourself.

A luxurious, private high-temperature bedrock bathing space available only to women. The aroma of roses and herbs fills the air, creating a deeply relaxing effect. Warming the body thoroughly while surrounded by comforting fragrance boosts metabolism and soothes both body and mind beautifully. You can fully enjoy an elegant wellness time unique to women, without worrying about those around you.
The main building alternates between male and female use on odd and even days
Visited by Our Editors
We actually visited in August 2026
The final destination where you reboot as a human being
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