The Neighborhood Bathhouse Japan Almost Let Disappear

Find out what a sento is, how Japan's public bathhouses grew, why many closed, and how to enjoy a visit with the right etiquette.

Updated October 19, 2026 | By Tokyo Paul

Quick answer: A sento is a Japanese public bathhouse where neighbors pay a small fee to wash and soak in large, hot communal tubs. Sento began as a solution for homes without baths and declined as private bathrooms spread from the 1960s onward. Many survive today as neighborhood spas, and visitors can enjoy them by washing thoroughly before entering the tub.

What a sento is

A sento is a public bathhouse, a place where people go to wash and soak in shared hot water, usually in a nearby neighborhood. For much of the twentieth century it was an ordinary part of daily life for anyone whose home had no bath, and it doubled as a spot where neighbors and several generations met.

The Tokyo Sento Association, which represents bathhouses in the capital, describes the modern sento as a kind of neighborhood hot spring or spa: an affordable form of leisure where people can relax. In Tokyo the water is usually kept at around 42 degrees Celsius, hotter than many home baths, and the tubs are deeper than 50 centimeters, so bathers can sink in comfortably.

Sento are different from onsen. An onsen uses natural hot spring water, while a sento generally uses heated tap water, although some bathhouses draw groundwater or add hot spring water. For a first-time visitor, a sento is often the easiest and least expensive way to experience communal bathing.

A short history of public bathing

Bathing in Japan has deep religious roots. Purification rituals in Shinto and bathing at Buddhist temples both treated washing as a way to cleanse the body and mind. Temple baths called yuya, often steam rooms, were opened to worshippers and to the sick, and the first mention of a commercial bathhouse is usually dated to 1266.

In the Edo period (1603 to 1868), bathhouses spread through the growing city. Edo bathhouses often had sizable pools, and the shogunate required separate baths for men and women to uphold public morals. Mixed bathing was common early on and was restricted more than once over the following centuries.

Over the Meiji and Taisho periods, bathhouses increasingly gained higher ceilings, windows and tiled floors that were easier to keep clean. The Great Kanto Earthquake of 1923 destroyed most baths in the Tokyo area, and the rebuilding that followed helped spread the tiled bathhouse. Public baths became even more important in the years after World War II, and their numbers rose until around 1970.

Why so many closed

The rise of private bathrooms changed everything. The Tokyo Sento Association notes that the number of bathhouses began to drop after about 1965, when baths at home became common. A building with a boiler, a chimney and daily staffing is expensive to keep running, and when the neighborhood no longer needs it, the bathhouse may close.

Aging owners, rising fuel costs and the challenge of finding successors have also affected many family-run baths. Some buildings were redeveloped into apartments or other businesses, while others kept going with a single owner who lived upstairs and tended the boiler each afternoon, as small family businesses often do.

At the same time, there is another side to the story. The decline made the remaining sento feel special, and a growing number of locals and visitors seek them out for their warmth, architecture and slower pace. Many survive in older neighborhoods, supported by loyal regulars and local groups. Check each place for its current situation, since closures and reopenings happen.

The look of a traditional sento

Traditional bathhouses are easy to recognize. A cloth curtain called a noren often hangs at the door and carries the character yu, meaning hot water, or its hiragana form. Many have a gabled roof in a temple style, though not all and a tall chimney that once served as a landmark.

Inside, shoes go into small lockers, and separate entrances lead to men's and women's changing rooms. Some old bathhouses have a raised attendant's platform called a bandai between the two sides. Newer ones tend to use a front desk. The bathing area is tiled and has rows of faucets with stools and small buckets for washing.

The wall at the far end of the bathing area is famous for its large picture, most often Mount Fuji, painted on the wall or made in tile. Other mural subjects include other landscapes, sea scenes and sometimes cheerful illustrations. In the Kanto region the tubs usually sit near the mural wall, while in Kansai they are more often in the middle of the room.

How to take a sento bath

The routine is simple. Pay at the entrance, put your shoes in a locker, and choose the correct changing room. Undress completely in the changing room and carry a small towel into the bath area. Before stepping into the tub, sit on a stool at a faucet and wash your body and hair thoroughly. Rinse off all the soap.

Keep your towel out of the water, and many people fold it on their heads. Do not splash or swim. Enter the tub slowly because the water may be hot. Leave when you are warm, rinse if you like, dry yourself at the stool area so you do not drip across the changing room, and then take your time in the changing area.

The Tokyo Sento Association states that smartphones and photography are not allowed in changing rooms or bathing areas. Men and women use separate sides, and families with small children should check the local age rules, which are not the same everywhere.

Practical tips for visitors

Many sento sell small towels and soap at the counter, so visitors are not required to bring everything. Because rules can vary, it is helpful to ask. Most bathhouses open in the afternoon and close late at night, but days off differ, so check the current hours before going.

Adult entry in Tokyo has recently been listed at roughly 550 yen, with lower prices for children, but prices are set locally and can change. Saunas or other extras are often charged on top. Other prefectures can be less expensive. Always check the current information.

Some places refuse visible tattoos, while others are relaxed or allow small covering stickers. Policies differ by bathhouse, so it is polite to ask in advance. Drinking water and a cold drink afterward are part of the experience; some sento sell bottled milk or tea near the exit.

Sento today

Modern sento come in many forms. Some preserve a Showa-era atmosphere with wooden lockers, a hand-painted mural and a neighborhood regular chatting at the front desk. Others have been renovated with cleaner design, bright lighting, event nights and cafes. Larger complexes sometimes called super sento add saunas, jet baths and relaxation rooms.

Local bathhouse associations run stamp rallies, special herbal bath days and seasonal events. In Tokyo, October 10 is known as Sento Day, and the association has promoted events around it, such as special bath days and stamp rallies. Specific events change from year to year, so check the association's site.

Visiting a sento is a good way to see how Japanese people unwind and share a space with neighbors. The experience is easy to fit into a trip, because most neighborhoods in large cities have one within a short walk. It is also a friendly way to take a break from sightseeing, as long as visitors follow the simple rules and take time to relax.

Frequently Asked Questions

What is the difference between a sento and an onsen?

An onsen uses natural hot spring water, while a sento generally uses heated tap water and serves city neighborhoods. Etiquette is broadly the same: wash first, keep towels out of the bath and be quiet. A sento is usually cheaper and easier to reach, so it is a handy introduction to communal bathing.

Do I have to be naked in a sento?

Yes, bathing is done without clothes, and swimsuits are not worn. People bathe in separate men's and women's areas, and a small towel is used for modesty when walking around. It can feel unfamiliar at first, but it is the normal custom, and bathers generally mind their own business.

How much does a sento cost?

Prices are set by each prefecture and change over time, so check the current information. Tokyo adult admission has recently been listed at roughly 550 yen, with lower prices for children, and other prefectures may differ. Saunas, towels and soap are often extra, and the facility's own website or counter has the latest rates.