Hakone Kowaki-en Yunessun


Hakone Kowaki-en Yunessun

Hakone Kowaki-en Yunessun is best described as a hot spring amusement park. The facility is divided into the swimsuit area, and Mori no Yu, or the hot spring (onsen) area where visitors enter the water Japanese-style, without any clothes on. After entering, visitors can decide on the area they’d like to relax in (you can also purchase a ticket for both areas). The most famous attractions of the swimsuit part of the facility are the outdoor onsen water slide and the many unique onsen tubs, including a “real coffee bathtub” and a “wine bathtub.” Inside is a shopping mall where you can find Hakone souvenirs and limited-edition goods, restaurants and lounges that will help you have an enjoyable day. There are rental towels and swimsuits available at the facility (separate fee), so you don’t have to worry about bringing any luggage when visiting.



Kanagawa, Ashigarashimo, Hakone, Ninotaira 1297 [ Google Maps ]

Business Hours

Yunessun (Swimsuit Area): 9:00-19:00

Days Closed

Open year-round
*The park is closed during facility maintenance

Time Required

2 hours or more



Accepted Credit Cards

Visa, Mastercard, JCB, American Express, Diners Club, UnionPay, other


English, Chinese, Korean

Nearest Station

Hakone Tozan Bus (Kowakien 137), (Yunessun-mae 138)


Ride the Hakone Tozan bus (Line H) bound for Hakonecho-minato from Hakone Yumoto Station (OH51); after about 20 minutes, get off at Kowakien bus stop (137) or Yunessun-mae bus stop (138); within walking distance


Yunessun (Swimsuit Area): adults: 2,500 yen, children: 1,400 yen
Mori no Yu (Onsen Area): adults: 1,500 yen, children: 1,000 yen
Passport (Yunessun/Mori no Yu): adults: 3,500 yen, children: 1,800 yen
*All fees including tax

Freepass Discount Information

Yunessun (Swimsuit Area): adults: 2,000 yen, elementary school students: 1,000 yen
Passport (Yunessun/Mori no Yu): adults: 3,000 yen, elementary school students: 1,500 yen
300 yen off price for zip line in the outdoor area (not valid in winter when operations are suspended)

Telephone Number


Official Website
*Information may be in Japanese.