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Kojigoku hot spring pavilion

Full of the mood of a secluded hot spring. Unzen's best hot spring for beautiful skin

The history of this famous hot spring is long, dating back to 1731 (Kyoho 16). It is said that Shoin Yoshida once visited here.

Opened in 1919 as a public bathhouse, it is now popular among day-trippers as the outside bathhouse of Seiunso in Unzen Hot Spring. The hot spring water gushes out behind the building, creating an atmosphere of a secluded hot spring. 440 tons of hot spring water per day, the highest of any hot spring in Unzen, is poured into the bathtubs freshly after gushing out. The cloudy white water is simple sulfur spring water with a slightly acidic PH of 4.3. After bathing, your skin will be moist and smooth. No wonder hot spring lovers from all over Japan come to Unzen.

You can enjoy the feeling of a small hell even in your own bath.

There are three major hot springs in Unzen: Koyu, Arayu, and Kojigoku, with Kojigoku hot spring having the thickest and whitest water. However, the density and color of the sulfur spring water varies from day to day, reminding us once again that hot springs are a natural part of nature.
To enjoy such milky white water at home, bath salts that faithfully reproduce the hot spring ingredients, color, and smell are also available. We recommend these products not only as souvenirs, but also for home use.

The famous hot spring water, which has high medicinal effects and has been popular as a therapeutic bath for all illnesses since ancient times, will heal the body and mind of travelers.

Kojigoku Hot Spring

• 500-1 Unzen, Obama-cho, Unzen City, Nagasaki Prefecture MAP
• Approximately a 20-minute walk from Hoshino Resorts KAI Unzen
• November-April: 9:30-19:00, May-October: 20:00
• No
• Admission: Adults 500 yen, elementary school students and younger 250 yen, 3 years old and younger free
• 0957-73-3273
• Free of charge
• Simple sulfur spring
• Shampoo, etc. provided

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Yunosato Hot Spring Public Bathhouse Dankyu Bath

The oldest public bathhouse in Unzen Hot Spring

Dankyu" means "rakkyo" in the Unzen dialect, and was named after a large barrel of pickled rakkyo that was once used in place of a bathtub. Even now that the barrels are no longer used, only the nickname remains, and the bathtub is still familiar to visitors. The current bathtub is also oval in shape, a remnant of those days.

The hot spring is a highly acidic sulfate spring with a PH value of 2.3, but it is soft on the skin and is said to be effective in relieving chronic neuralgia, muscle pain, and fatigue. The hot spring water is poured into a deep bathtub, so that you can enjoy the hot spring as if it were wrapped around your entire body up to the neck.

Enjoy the famous hot spring slowly with the local people.

The quality of the water and the retro atmosphere make it popular among tourists. For locals, the communal baths feel almost the same as their own baths at home. Many people visit at regular times every day, either in the morning before work or in the evening after work. Many people visit the hot springs at the same time as the locals. It is a nostalgic bathhouse that suits such a scene.

Open from morning until late at night, you can come empty-handed as soon as you feel like it. Original towels with a cute checkered pattern are available for purchase, and after using them, you can take them home as souvenirs of your hot spring trip.

Yunosato Hot Spring Public Bathhouse: Dankyu Bath

• 303-1 Unzen, Obama-cho, Unzen City, Nagasaki Prefecture MAP
• 5 minutes walk from Hoshino Resorts KAI Unzen
• 9:00-22:00
• No
• Admission: Adults 200 yen, elementary school students 100 yen
• 080-5286-2576
• Free of charge
• Acidic, iron-containing (II, III)-simple hot spring
• No shampoo, etc. provided

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Nami no Yu Akane

It looks as if it is floating on the sea! A private outdoor hot spring on the sea.

This is a private outdoor hot spring Property operated by Hotel Orange Bay. It is located on top of a wave-absorbing block, closest to the ocean in the Obama hot spring resort area on the west side of the Shimabara Peninsula, overlooking Tachibana Bay. With the ocean spread out before one's eyes, the difference between the bathtub and the sea surface is only 20 cm at high tide, making one feel as if one is floating with the sea.

The spring is a sodium chloride spring. The salty water warms the body and is said to have a high heat-retaining effect. The hot spring is reserved for private parties, so you can enjoy the spectacular view and hot spring all to yourself without hesitation. You can enjoy a blissful moment of soaking in the hot springs while admiring the spectacular view and listening to the sound of the waves.

Enjoy the sunset as the sun sets over Tachibana Bay.

Bathing while watching the sun set over Tachibana Bay during sunset hours is also an extravagant experience. There are no obstructions in front of you, and the difference between the sunset and the sea is almost nothing, making it a very powerful experience. The sky turns a deep azure and the setting sun drops to the horizon, adding to the atmosphere of a hot spring bath.

You can also bathe at night while gazing at the starlit sky. You can enjoy a different atmosphere from that of daytime and sunset. The ever-changing expressions of the sea and sky, while listening to the scent of the ocean and the sound of the waves, will keep visitors coming back.

Nami no Yu Akane

• 20 Marina, Kohama-cho, Unzen City, Nagasaki MAP
• Approximately 20 minutes by car from Hoshino Resorts KAI Unzen
• 10:00-23:00 (last admission 22:00)
  May not be available during inclement weather, high tide, high tide, etc.
• Closed on weekends and holidays
• Bathing fee 3,000 yen for 50 minutes for 1-4 persons, +500 yen per person for 5 or more persons
• 0957-76-0883（YUASOBI)
• Available
• Sodium-chloride spring
• Reservations required on the day of use or by phone at least one day in advance. Reservations are accepted at the private hot spring "YUASOBI" when taking a bath. No shampoo, etc. provided.

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Wakihama hot spring bathhouse (Otakshanyu)

An old-fashioned public bathhouse where time seems to have stopped since the early Showa period.

Founded in 1937, the restaurant retains the atmosphere of that time. Open from 5:00 a.m., it is an indispensable place for local residents, including fishermen and farmers, many of whom are regular customers in the early morning.

Both men and women have two bathtubs each. Despite the age of the baths, they are well maintained and provide a pleasant atmosphere. The baths are especially beautiful when the morning sun shines into them, enhancing the atmosphere. In the Otakshanyu style, the bathtub's lukewarm and hot water temperatures are set every morning by the regulars themselves. This episode shows that the hot spring is deeply rooted in the lives of the local people.

Nostalgic appearance that invites nostalgia

The emotional atmosphere of the changing rooms is also exceptional. The wooden lockers that have been in use since the establishment of the spa bear witness to its long history. On the wall, you will find a book on the benefits of hot spring baths from the time of the establishment. You can immerse yourself in a nostalgic feeling as if you have time-traveled back to the early Showa period. The owner's desire to preserve the atmosphere of the time of its establishment, while making repairs, can be clearly felt.

The spring water is sodium chloride spring water, just like the other hot springs in Obama Hot Spring. The water feels soft on the skin and warms the body to the core after bathing. It seems to relieve daily fatigue at once.

Wakihama hot spring bathhouse (Otakshan-yu)

• 7 Minami-Honcho, Obama-cho, Unzen City, Nagasaki Prefecture MAP
• Approximately 21 minutes by car from Hoshino Resorts KAI Unzen
• 5 min. walk from "Minami-honmachi Kominkan-mae" bus stop by Shimatetsu Bus.
• 5:00 - 21:00
• No
• Admission: Adults 200 yen, children (6-12 years old) 100 yen, children under 5 years old 50 yen
• 0957-74-3402
• Free of charge
• Sodium-chloride spring
• No shampoo, etc. provided

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Hotto Futto 105

Relax while watching the sea from the longest footbath in Japan

Kohama Hot Spring is located closest to the magma pool of Unzen Volcano, which lies beneath Tachibana Bay, and is said to have a source temperature of 105℃. It is the longest footbath in Japan with a total length of 105 meters, named after the temperature of the source.

The footbath continues along Tachibana Bay, a luxurious location where visitors can relax while enjoying the view of the ocean. At sunset, the entire area turns orange, creating a romantic atmosphere. There is also a walking footbath where pebbles embedded in the bottom of the footbath stimulate pressure points on the soles of the feet, and a pet footbath space where you and your dog can enjoy a footbath together, attracting many people on holidays.

Delicious vegetables steamed in the steam of the hot spring!

Adjacent to the footbath Property is a large steaming kettle, where visitors can bring in their favorite vegetables or seafood and steam them in the steam of the hot spring. Use of the kettle is free, and if you do not have a basket, you can rent one for a fee. Even if you do not bring your own food, you can buy ingredients such as eggs and sweet potatoes at the store.
The source is hot, so its power is immense. Eggs are steamed for 8 to 10 minutes, and sweet potatoes are steamed to the core in about 20 minutes. The steamed ingredients can be tasted while enjoying the footbath. The flavor and sweetness of the ingredients are concentrated and combined with the subtle aroma of sulfur, the food is exceptionally delicious.

Hot Foot 105

• 905-70 Kitahonmachi, Kohama-cho, Unzen City, Nagasaki MAP
• Approximately 20 minutes by car from Hoshino Resorts KAI Unzen
• 10:00-19:00 (Steaming kettle - 18:30)
  November - March: 10:00 - 18:00 (Steaming time - 17:30)
• Closed on the 3rd Wednesday of the month, 1/4, 1/5, and irregular holidays
• Free of charge
• 0957-74-2672（Obama Hot Spring Tourist Information Center)
• Charged
• Sodium-chloride spring

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Footbath Plaza

An oasis in the hot spring town to heal your feet after a hard day's walk

This covered footbath is located quietly in the hot spring resort of Unzen. The circular bathtub is about 4 meters in diameter and can accommodate about 10 people. If you look at the pool of hot water in the center of the tub, you will see hot spring water gushing out. The area is filled with the gentle scent of sulfur, and just by sitting down and soaking your feet, you can ease your fatigue at once. Footbath towels are available for 100 yen each at the nearby parking lot toll booth, so you can visit without any towels. Since the baths are free of charge, visitors can easily stop by when they are tired from visiting hell or strolling around the hot spring resort area.

Footbath Plaza

• 320 Unzen, Obama-cho, Unzen City, Nagasaki Prefecture MAP
• Approximately 7 minutes on foot from Hoshino Resorts KAI Unzen
• 24 hours
• No
• Free of charge
• 0957-73-3434（Unzen Hot Spring Tourist Information Center)
• None
• Simple sulfur spring