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Ryuoh Radon Onsen Yutopia" boasts the nation's top level of therapeutic effects Winner of the "Onsen General Election" for 6 consecutive years! Awarded in the "Nifty Onsen Ranking 2023" for three consecutive years!

It is a rare, genuine, pure hot spring with free-flowing hot-spring water, and was awarded No. 1 in the nation in the "good hot water category!

株式会社 湯ーとぴあ

Yutopia Corporation (Location: Kai City, Yamanashi Prefecture; President: Yoshiteru Hayakawa) won the second place in the "Health Promotion Category" nationwide and the first place in the Chubu area in the "Onsen Hotel General Election 2023," a nationwide popularity contest for hot spring hotels, for the sixth consecutive year. It also won the "Nifty Onsen Ranking 2023" for three consecutive years, and was awarded "No.1 in the category of good hot water", "No.3 in the Hokuriku/Koshinetsu area", and "No.2 in Yamanashi Prefecture", among others.

URL of "Ryuoh Radon Onsen Yutopia":

The original radon hot spring that sucks hot water

Outline of the awards

▼Onsen General Election 2023 ( )

A project to revitalize hot spring resorts with public participation, which has been conducted since 2016 under the auspices of five ministries and agencies. The results of the public's support votes for the entered hot spring resorts throughout Japan are used to create a ranking and announce the results.

<Hotel's performance

Health promotion category: 2nd place

▼The General Election for Hot Springs Hotel and Hotel 2023 ( )

The "General Election for Onsen (Hot Springs)" will be held for the eighth year in 2023, ranking 165 hot spring resorts and hotels across Japan. 165 hot spring resorts and hotels throughout Japan participated in this project.

<Achievements of our hotel

National Ranking

Health promotion category: 2nd

Solo traveler category: 4th

Second place in the "stay-at-home" category

Access category: 2nd

Chubu Region Ranking

Health promotion category

Solo travel category

Solo travel category

Access category 1st place

Nifty Onsen Ranking 2023 ( )

Each ranking winner was selected from among the facilities listed on NIFTY Onsen as of November 30, 2023.

<Achievements of our hotel

Ranked 62nd overall in Japan/out of 16,674 facilities nationwide (as of August 2023)

Hokuriku/Koshinetsu area: 3rd overall

Ranked 2nd overall in Yamanashi Prefecture

Hot water category: No. 1 in Japan

Lodging category: No. 8 in Japan

Comments on the Award and Future Prospects

We are very happy to have received your support over the past six years and to have received various awards. Of course, it is not only the power of our hot springs that enables us to continue to receive these awards. It is thanks to all of you who continue to support us despite our sometimes difficult physical condition. We hope to continue to raise the basal body temperature of all those who are suffering from illnesses with our fresh water. Radon warms the body from the core. What can we do with the hot springs we breathe in? It would be great if we could make someone healthy and smile in an instant. And maybe it will change someone's life forever. We welcome our customers every day while delivering warmth and kindness.

The charm of "Ryuoh Radon Onsen Yutopia

Recognized as one of the "100 best hot springs in Yamanashi

Our Ryuoh radon hot spring has been selected as one of the "100 best hot springs in Yamanashi," a list of 120 facilities with hot springs that are full of character.

The hot spring is rich in individuality with various types of spring qualities, and has the most powerful therapeutic effects among the hot springs in Yamanashi, which has a high diversity of hot springs, and is one of the best in the country. This is a luxurious bath using natural hot spring water that is completely flowing.

Radon Onsen, the original hot spring that sucks in water

Radon hot springs are hot springs in which radon gas, kept at a safe constant concentration, is pumped into the bathtub. Radon works on cells throughout the body by being taken into the body through bathing and breathing, and promotes "cell activation," "promotion of natural healing power," "enhancement of metabolism," and "improvement of immunity. For this reason, radon hot springs are also known as "hot springs that breathe. Our facility uses a radon generator with a concentration of 87 machetes, which is also used for medical purposes, to provide safe and stable radon hot spring water at all times.

Promoting services based on the concept of "health care

We provide a synergistic effect that exceeds expectations by combining aromatherapy with hot-spring cure and radon therapy. In addition, we propose a "high-quality way of spending time that heals the mind and body" by combining "meals that make the most of local ingredients," "quad beauty baths with reduced water," "radon hot springs with the highest concentration in Japan," and "organic aroma.

Largest radon generator

Natural radon hot spring bathtub

Outline of Ryuoh Radon Onsen Yutopia

Name: Ryuoh Radon Onsen Yutopia

Location: 1300-1 Tomitake-Shinden, Kai-shi, Yamanashi-ken 400-0113

Access : 8 minutes walk from Ryuoh Station

Spring quality: Sulfur containing sodium chloride and bicarbonate onsen

Lodging: 11,000 yen per night for 2 meals (tax included), 6,600 yen per night with no meal (tax included)

Drop-in baths: 10:00-23:00, 770 yen (tax included) for adults, 660 yen (tax included) for children 12 years old and younger


YouTube : Yamanashi Hyakumeiyu "Ryuoh Radon Onsen Yutopia" Women's trip report

        Health Tourism PR "Yottekeshi! Real radon hot spring" (Japanese only)

        Inhale plenty of radon and feel the effects of a hot-spring cure!

        Ryuoh Radon Onsen Yutopia

Showa-era retro "Ryuoh Radon Onsen Yutopia


Company Profile

Company name: U-TOPIA Ltd.

Location: 1300-1 Tomitake-Shinden, Kai City, Yamanashi-ken

Representative: Yoshiteru Hayakawa

Establishment : February 23, 1946

Capital : 10 million yen

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