OganOnsenGrandHotel

Relieve body and mind in an ancient seawater hot spring with one of Japan's highest calcium concentrations and a quiet sauna

Tochigi Nasukarasuyama City

"Ogan Onsen Grand Hotel" is a hot spring hotel nestled in the quiet surroundings of Nasukarasuyama City, boasting one of the highest mineral concentrations in Japan. Its sodium-calcium chloride spring, originating from "ancient seawater" that rises from 1,200 m underground, is rich in calcium and offered as free-flowing natural hot spring water straight from the source with no added water. Along with a spacious open-air bath that reflects the seasons of Nasu, guests can spend a luxurious time unwinding body and mind in a rare, famous bath and sauna that let you feel the history of the Earth.

Hot Spring & Bath Information

Ogan Onsen

TypeNatural Hot Spring

Flow-through

A sodium-calcium chloride spring that gushes from 1,200 m underground and boasts one of the highest calcium contents in Japan. Originating from "ancient seawater" trapped millions of years ago, it is offered as 100% free-flowing natural spring water with no added water. Its rich minerals cling to the skin and deliver outstanding heat-retaining and moisturizing effects. You can fully enjoy this rare, famous bath that lets you feel the breath of the Earth in a spacious bathtub.

Sauna

Sauna

80°C

Sauna TypeDry Sauna

Stove TypeConvection Stove (Sauna Stone)

Capacity6people

Men'sWomen's

A calm dry sauna wrapped in the warmth of wood. The mild temperature setting makes it easy to breathe, allowing you to warm up gradually without putting too much strain on your body. A soothing space where you can work up a sweat in a quiet room while feeling your own heartbeat.

Cold Bath

Cold Bath

20°C

Water QualityTap Water

Capacity2people

Men'sWomen's

A gentle cold plunge bath that softly cools down your overheated body after the sauna. You can enjoy a blissful cooldown while keeping your heart rate steady and relaxed.

Business Hours

Monday
15:00〜10:00
Tuesday
15:00〜10:00
Wednesday
15:00〜10:00
Thursday
15:00〜10:00
Friday
15:00〜10:00
Saturday
15:00〜10:00
Sunday
15:00〜10:00
Holiday
15:00〜10:00

Closed Days: None

Address

〒321-0521 86-2 Iwako, Nasukarasuyama City, Tochigi Prefecture

View on Google Maps

Website

http://oogane-gh.com/
Hotel & Ryokan

Gender Access

Gender Separated

🚫
Tattoo Policy
No Tattoos
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