Amagase Onsen Masujiro no Yu
天ヶ瀬温泉 益次郎の湯あまがせおんせん ますじろうのゆ
Public Bathhouse
Kyushu & Okinawa·Oita
Bathing & Water
Natural onsen water
Uses natural hot spring water
Bathing Arrangements
Mixed BathingYes
Shared bathing area for all genders
About
A roofed riverside mixed bath on the bank of the Kusu River, one of five shared open-air pools dotted along the water's edge at Amagase Onsen. The water is a simple sulfur spring, free-flowing and unheated. A modest screen on the river side is the only concession to privacy.
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Last updated June 9, 2026