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Sauna Base Trip

SAUNA BASE TRIP.

Private reservation-only outdoor sauna in Yamagata city

Sauna
Tohoku·Yamagata

Bathing & Water

Cold BathYes

Cold water plunge bath, typically used after sauna

Highlights

Steam Sauna

About

A sauna you book for your own group, so there is no shared bathhouse etiquette to worry about. There are two saunas, a dry sauna where you can pour water on the stones and a gentler steam sauna for those who find the heat hard, followed by a cold plunge outdoors and a space to cool off in the open air. It is reservation-only, and same-day booking is not possible. It sits inside the premises of a local architecture firm in Yamagata city.

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Onsen Oni

Last updated October 11, 2026