bathhouse · 1–4 hours
Onsen & Sento Bathing
Japan’s mineral hot-spring baths (onsen) and neighborhood bathhouses (sento): the most refined bathing culture in the world, available in Tokyo for the price of a sandwich.
What it costs
What to expect
Gender-separated, nude bathing. You wash seated at individual stations — thoroughly, soap and all — before entering the shared mineral pools, which rotate temperatures, jets, and sometimes outdoor rotenburo tubs. Complexes add saunas, cold plunges, restaurants, and nap lounges. Silence is comfortable; the ritual is meditative by design.
Etiquette & modesty
The non-negotiables: wash before soaking; the small towel never touches the water; hair tied up; no swimwear; quiet voices. Tattoos still bar entry at many facilities — search "tattoo-friendly onsen," book a private kashikiri bath, or use cover stickers where allowed. No tipping, ever.
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Where this treatment is best — and what it costs there. One short email when it matters.
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