登別 · BEST 10
Soaking outdoors in a rotenburo (open-air bath) is the highlight of any ryokan stay — the same tub feels completely different with each season and hour of the day.
Top 10 of 11 properties, ranked by rating and popularity

Hokkaido · Noboribetsu
“Ever heard of a ryokan with 35 different baths?”

Hokkaido · Noboribetsu
“A Roman-style domed bathhouse from 1938, and 88 years of history flowing through Noboribetsu”

Hokkaido · Noboribetsu
“Four spring types drawn from Jigokudani, and 90 years of homemade craft”

Hokkaido · Noboribetsu
“Every Room With a Hinoki Open-Air Bath, Noboribetsu's Milky White Sulfur Water in Your Room”

Hokkaido · Noboribetsu
“Twenty-four hours in natural sulfur waters, beside Noboribetsu's Hell Valley”

Hokkaido · Noboribetsu
“A Noboribetsu night spent soaking through 31 different hot springs”

Hokkaido · Noboribetsu
“Undiluted sulphur water piped from Jigokudani, in a ryokan of just 21 rooms”

Hokkaido · Noboribetsu
“In the land of the oni, surrender to a legendary bath”

Hokkaido · Noboribetsu
“A roofless open-air bath under a sky full of stars”