Hakone Kowakien Yunessun

Dive into fun at Hakone Kowakien Yunessun, a hot spring theme park where baths go beyond the ordinary. Soak in wine, coffee, or green tea pools, and enjoy family-friendly water attractions with a playful twist. A unique onsen experience that blends relaxation with excitement.

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Water splashes from a tipping bucket at Hakone Kowakien Yunessun water park.

People swimming in the indoor pool at Hakone Kowakien Yunessun, Japan, under a sky-painted ceiling.

Garra rufa fish pedicure at Hakone Kowakien Yunessun, Japan.

Hakone Kowakien Yunessun coffee-themed hot spring bath with wooden barrel labeled "Yunessun Coffee.

Water bucket splashes at Hakone Kowakien Yunessun water playground, Japan.

Spa

Flexible duration

Get full access to YUNESSUN’s indoor and outdoor pools, themed baths, saunas, and family-friendly play zones.
Dive into unique experiences like the wine, coffee, green tea, and sake baths for a playful twist on relaxation.
Kids can splash away in BOXAPPY’s Jungle Gym and Splish-Splash pools, while adults unwind in saunas or the Green Terrace Jacuzzi.
Open-air baths and mountain views create a tranquil setting, perfect for soaking up Hakone’s natural beauty.
Enhance your visit with access to Mori no Yu’s pottery bath, cypress bath (female only), private rooms, and special event baths—reservation required.

More details

Get full access to YUNESSUN’s indoor and outdoor pools, themed baths, saunas, and family-friendly play zones.
Dive into unique experiences like the wine, coffee, green tea, and sake baths for a playful twist on relaxation.
Kids can splash away in BOXAPPY’s Jungle Gym and Splish-Splash pools, while adults unwind in saunas or the Green Terrace Jacuzzi.
Open-air baths and mountain views create a tranquil setting, perfect for soaking up Hakone’s natural beauty.
Enhance your visit with access to Mori no Yu’s pottery bath, cypress bath (female only), private rooms, and special event baths—reservation required.