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.
Yunessun (Swimsuit Area): 9:00-19:00
*The park is closed during facility maintenance
2 hours or more
Accepted Credit Cards
Visa, Mastercard, JCB, American Express, Diners Club, UnionPay, other
English, Chinese, Korean
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)
*Information may be in Japanese.
Enter your location and destination to find out about public transportation and transfers.
*Useable only for transfers in Hakone or to the Odakyu Line or the Odawara Hakone Highway Bus.
Hot Springs (Onsen)