Japanese Sentō Guide 2026: Etiquette, Tattoos & Best Baths

Japan · Public Baths · Culture & Etiquette

By Nobu · Updated June 2026 · Verified against the Tokyo Sentō Association and each bath’s own listing

A sentō is a neighbourhood public bathhouse — the everyday cousin of the onsen, heated tap water rather than a natural hot spring. In Tokyo a soak costs a flat ¥550, baths are split by sex, and the one rule that matters most is that you wash completely before you get in. Tattoos? Far more sentō allow them than the big onsen resorts do, but it’s bath-by-bath, so this guide names the ones in Tokyo, Kyoto and Osaka that actually do — and walks you through everything else, first soak to last.

What is a sentō — and how is it different from an onsen?

A sentō (銭湯) is a public bathhouse for everyday washing — legally a “public bath,” traditionally filled with heated ordinary tap water. An onsen, by Japan’s 1948 Hot Springs Act, must be natural spring water that is either 25°C or hotter at the source or carries a set amount of at least one of 19 designated minerals. So the simple line is: onsen = natural hot spring; sentō = the local bath down the street. (Confusingly, a few sentō sit on real hot-spring water and call themselves “onsen sentō” — the best of both.) Separate again are “super sentō” — big modern spa complexes with food courts and lounges that aren’t bound by the regulated price and usually cost ¥1,000 or more.

How much does a sentō cost?

Cheap, by design. The adult entry fee is a regulated maximum set by each prefecture, so it changes depending on where you are. In Tokyo it’s ¥550 (ages 12+), in force since August 2024 — the fourth straight yearly rise (¥480 in 2021 → ¥500 → ¥520 → ¥550) as fuel costs climbed. Other prefectures set their own rate, roughly ¥490–¥550.

Small old sentō may not stock soap or shampoo, so bring your own or buy a sachet at the desk; towels can usually be rented. That ¥550 is for an ordinary sentō — a “super sentō” is a different, pricier animal.

How do you actually use a sentō? (step by step)

It’s simple once you’ve done it once. The order is the whole etiquette:

The baths you’ll find inside

A typical sentō isn’t one tub but several: a plain hot soaking bath, jet and bubble baths, a cold-water bath to cool off, often a denki-buro (an “electric bath” that passes a mild current through the water), and frequently a sauna. Many also have a herbal/medicinal bath that changes by the day, or an open-air bath out back.

Why sentō look the way they do

Half the pleasure is the architecture. Older Tokyo sentō have a raised bandai attendant’s counter (about 1.3 m high) where staff once took the money and kept an eye on both baths, and soaring temple-style “miyazukuri” ceilings — a look that spread after carpenters used to building shrines rebuilt the bathhouses following the 1923 Great Kantō Earthquake. And then there’s the painted Mt Fuji wall mural: the tradition began in 1912 at a Kanda bathhouse, Kikai-yu, when the owner hired a Western-style painter from near Mt Fuji to cheer up the children. It became a Kantō signature — though sentō in Kansai and elsewhere often have no mural at all. (Kikai-yu itself is long gone; only the story remains.)

Famous sentō worth going out of your way for

You can drop into any neighbourhood bath, but a handful are destinations in themselves. All of these were confirmed operating in 2026 — though sentō close and change hours often, so check before a special trip.

Can you go to a sentō with tattoos?

Usually, yes — and that’s the whole point of this section, because it’s where most visitors get stuck. Traditional neighbourhood sentō are far more relaxed about tattoos than onsen resorts, super-sentō and leisure spas. Plenty of ordinary Tokyo baths have no ban at all (the Tokyo Sentō Association’s “Welcome! Sentō” list ran to 54). But it is genuinely bath-by-bath — policies change without notice — so check each one, and don’t assume. Below are baths confirmed to admit tattooed bathers (no cover-up needed), checked in 2026:

The decline — and the sentō revival

Sentō were once everywhere: nationwide they peaked at 18,325 in 1968, back when few homes had a private tub. Then almost every home got its own bath, owners aged out, and the numbers fell hard — Tokyo alone has dropped from over 2,000 postwar to around 420 association baths in 2025. But the last few years have brought a genuine revival: stylishly renovated baths with design-led interiors and serious saunas (Sumida’s Koganeyu, redesigned with a sauna and a DJ booth, is the poster child) have pulled in a younger crowd riding Japan’s sauna boom. A sentō visit has quietly become cool again.

First-timer tips, including for visitors from abroad

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