01
Open-air baths with ocean views
Enjoy the sound of waves, sea breeze, and sunset from natural rock baths overlooking the horizon.
TOKYO ISLAND ONSEN
Soak in the sea
and sunset on a Tokyo island.
Enjoy Kozushima’s ocean views
from seaside open-air hot springs.
Swimsuits required for outdoor bathsComfortable for families and groups
THREE APPEALS
Three Highlights
Take in the sea, unwind in the baths, and enjoy the flavors of the island.
02
Indoor baths and sauna
Relax in gender-separated indoor baths and a dry sauna after swimming, sightseeing, or hiking around the island.
03
Island meals after bathing
The restaurant offers warm, comforting meals for travelers. Take your time after a relaxing soak.
* Food photos are for illustrative purposes. Presentation and side dishes may vary.
FACILITIES
Hot Springs & Facilities
A variety of hot spring facilities where you can relax while feeling the nature of Kozushima.
Large Open-Air Bath
The main outdoor bath offers expansive views of Kozushima’s sea and sky.
* Open during the summer season only. Please check website news or the official Instagram for start and end dates.
Three Open-Air Baths
Natural rock baths offer different views and atmospheres throughout the outdoor area.
Footbath
A casual outdoor space to enjoy hot spring water before or after bathing.
FACILITIES
Facilities Inside the Building
Indoor facilities include a sauna, free lockers, rest area, and restaurant.
- Sauna
- Free lockers
- Rest area
- Restaurant
HOURS & FEES
Hours & Fees
Kouzushima Onsen Hoyo Center
11:00–20:00- Last entry
- 19:00
- Closed
- Every Wednesday
Restaurant
- Lunch
- 11:30–14:00 (L.O.13:30)
- Dinner
- 16:30–21:00 (L.O.20:30)
- Closed
- Every Wednesday
* Hours may vary depending on the season. Thank you for your understanding.
Admission
Adult ¥800Child ¥400
- Discounts available for people with disabilities and caregivers
- Resident discounts available
Payment Methods
CashVISAMastercardJCBiDPayPay
Items for Sale
TowelsSwimwearAmenitiesDrinks
Items, prices, and availability may change.
Spring Quality & Benefits
Chloride spring
Strong sodium chloride spring
- Stiff shoulders
- Neuralgia, lower back pain, frozen shoulder
- Cold sensitivity and chronic women’s health conditions
ACCESS
Access
Kozushima Onsen Hoyo Center
1-1 Sabizaki, Kozushima Village, Tokyo 100-0601
- Village busApprox. 7 min from Kozushima Port
- TaxiApprox. 5 min from Kozushima Port
- On footApprox. 25 min from Kozushima Port
OFFICIAL INSTAGRAM
The Hoyo Center today,
in photos.
Follow our official Instagram for updates, seasonal scenery, and the latest views from the island.
View Instagram
FAQ
FAQ
Do I need a swimsuit for the open-air baths?
Yes. Swimsuits are required for the outdoor baths. Indoor baths are separated by gender.
Can I use the facility if I forget a towel or swimsuit?
Towels, swimwear, and amenities are available for purchase. Please check availability on the day of your visit.
Can children use the baths?
Yes. For safety, children should be accompanied by a guardian.
What payment methods are accepted?
Cash, credit cards, and selected cashless payment methods are accepted.
Please contact us if you have any questions
04992-8-1376Reception hours: 11:00–20:00, except closing days