Katsuura Tsuruntsurun Onsen
勝浦つるんつるん温泉かつうらつるんつるんおんせん
Chiba's only meito (名湯百選) spring, famous for silky skin
Day Use
YesAdults ¥850. Bath unavailable 13:30–14:30 for cleaning. On weekends/holidays last entry 17:15.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
A private bath you can reserve for yourself or your group
Shared bathing area for all genders
Policies & Services
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
About
The name says it all: "tsuruntsurun" (つるんつるん) means silky smooth, and bathers consistently say their skin feels exactly that way after a soak. The water is a deep amber-brown and leaves a noticeably soft feel on the skin. This small ryokan holds a quiet distinction as the only spring in Chiba listed in Japan's Meito Hyakusen (名湯百選, the 100 famous hot springs). The bath itself is indoor only, cozy enough to feel full with around ten people. The rest area doubles as a gathering spot for locals, and the attached campsite makes it a natural stop for anyone exploring the Boso Peninsula.
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Last updated September 19, 2026