Opening days vary by season. In the warmer months it's open daily from 10:00 to 21:00, but from November to March it generally opens only on weekends and public holidays (closed January 1st). Check the facility's own calendar before an off-season visit.
Children pay 200 yen (preschoolers free); a 10-visit ticket book costs 6,000 yen.
Uses natural hot spring water
Open-air outdoor bath
Two open-air bath areas: a large rotenburo (large open-air bath) and a separate garden rotenburo that alternates between men's and women's use daily.
Enclosed indoor bathing area
Shared bathing area for all genders
Baths are gender-separated; the garden bath simply alternates which gender gets it day-to-day, not mixed bathing.
Allows entry with visible tattoos
Welcomes children and families
Restaurant or dining open to visitors (not just hotel meal plans)
Yamayuriso is a day-use-only onsen on the Kaida Kogen plateau below Mt. Ontake. There's an indoor bath plus two separate open-air areas, a large rotenburo and a smaller garden bath that alternates between men's and women's use each day. The water is the real draw here, an amber, iron-tinged spring that comes out reddish-brown rather than clear. On a fine day the large open-air bath faces Mt. Ontake directly, and there's a restaurant in the same building. It's tattoo-friendly and welcomes kids.
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Last updated July 22, 2026