Enjoy full access to both the YUNESSUN swimsuit spa and Mori no Yu hot spring areas in Hakone’s renowned spa resort.

Getting started

Begin at the main entrance, where your ticket is validated and you’ll receive a brief orientation on spa etiquette and area access. Follow posted signs to the changing areas, then choose your first zone—swimsuit or traditional hot spring.

What to expect

Hakone Kowakien Yunessun

Located 600 meters above sea level in Hakone, this expansive spa blends playful themed baths with authentic Japanese hot spring traditions. The facility is divided into two distinct areas: YUNESSUN (swimsuit required) and Mori no Yu (traditional onsen).

Features

• YUNESSUN Area: Explore indoor and outdoor pools, including the Aegean Sea of Gods, cave baths, and Dragon’s Waterfall. Themed baths feature wine, coffee, green tea, and sake (note: do not drink the bath liquids).

• Family-Friendly Pools: Kids can enjoy BOXAPPY’s Jungle Gym and Splish-Splash pools, designed for safe water play.

• Green Terrace: Relax in three unique baths and a Jacuzzi, with occasional special events and nighttime illumination for a vibrant atmosphere.

• Mori no Yu Area: Experience traditional Japanese bathing in indoor and outdoor hot springs, pottery baths, and the cypress bath (female-only). Saunas are gender-specific, with dry and mist options.

• Scenic Views: Open-air baths in Mori no Yu offer tranquil mountain vistas, especially beautiful in the evening.

• Private Rooms: For guests with tattoos, private rooms in Mori no Yu are available by reservation.

• Practical Notes: Outdoor hot springs in YUNESSUN close during winter. Towels are not permitted in baths, and some facilities have gender or age restrictions.

Exclusions

Dr. Fish foot bath is not included in general admission and requires a separate fee (minimum age: 3 years).