A bathhouse is a public facility designed for communal bathing, relaxation, and socializing. These spaces have existed for thousands of years across nearly every major civilization, from ancient Rome to Japan to the Ottoman Empire. While the specific design varies by culture, the core idea is the same: a shared space where people move through pools or rooms of different temperatures, cleanse their bodies, and spend time together. Today, bathhouses range from centuries-old traditions still operating in their original form to a new generation of urban wellness clubs built around community and contrast therapy.
How Roman Baths Worked
The Roman bathhouse is the most well-known ancient model, and its basic structure influenced bathing culture across Europe for centuries. A typical Roman bath complex moved visitors through three main rooms, each at a different temperature. The frigidarium was an unheated cold pool fed by the Romans’ aqueduct system. The tepidarium was a warm transitional space, sometimes a pool and sometimes just a heated room, warmed by steam from a large bronze brazier burning coal. Vents often connected it to the hottest room in the complex.
That hottest room, the caldarium, functioned like a modern hot tub. It relied on a heating system called a hypocaust: the floor was raised on stilts or platforms to create an empty space underneath, where a furnace burned coal or wood. Ceramic tiles covering the walls and floor absorbed and held that heat. Hollow walls allowed smoke to escape through carefully placed vents, keeping the air hot without filling the room with fumes. Roman baths weren’t just about getting clean. They were social hubs where people exercised, conducted business, and spent hours in conversation.
Bathhouse Traditions Around the World
Turkish Hammam
The Turkish hammam follows a structured ritual that can last well over an hour. You begin in a relaxation area where you undress and put on slippers, then move to a pre-heating room to let your body adjust to the warmth. The steam room comes next, with high humidity and heat that opens your pores and induces heavy sweating. After steaming, a specialist attendant performs a foam massage, covering your entire body in lather using gentle, sweeping motions. Then comes the scrub: using a coarse bathing glove made of textured material, the attendant rubs away dead skin, leaving the surface visibly smoother. A cold shower follows to close the pores and tighten the skin. The ritual typically ends with a full-body oil massage in a resting area, where light snacks and hot drinks are served.
Men traditionally wear a pestemal (a cotton bath towel wrapped at the waist), while women commonly wear bikini bottoms or disposable undergarments. Coed pools require bathing suits, but many hammams still operate separate hours for men and women.
Japanese Sento and Onsen
Japan has two distinct bathhouse traditions. A sento is an everyday public bathhouse that uses heated tap water. An onsen, by contrast, uses natural hot spring water and is legally defined under Japan’s Hot Springs Law, which requires the water to meet specific temperature or mineral composition criteria before a facility can use the name. Onsen are typically found in geologically active areas and are considered special destinations, while sento are neighborhood fixtures found in cities across the country.
The most important rule in both settings is to wash thoroughly before entering any communal water. You shower, soap, and scrub at a station before stepping into the pool. Nudity is standard, and swimsuits are typically not allowed. Failing to wash first is considered deeply disrespectful to other bathers.
Russian Banya
The Russian banya centers on intense steam heat, often generated by pouring water over heated stones. Its signature ritual involves the venik: bundles of dried birch, oak, or eucalyptus branches used to gently lash the body. This practice boosts circulation, opens pores, and releases aromatic compounds from the leaves, combining the effects of massage and aromatherapy. Banya sessions typically alternate between the steam room and plunges into cold water or snow, a form of contrast bathing that has been practiced in Russia for centuries.
Finnish Sauna
Finland’s sauna culture is perhaps the most widespread in the world, with roughly one sauna for every three people in the country. Finnish saunas use dry heat at low humidity. Swimsuits are considered taboo by purists, who view them as both uncomfortable and unclean. If you’re invited to a private sauna in Finland, going nude is the expected norm.
Dry Saunas Versus Steam Rooms
Most modern bathhouses include both dry saunas and steam rooms, and they work differently. A dry sauna heats the air using wood, electric, or infrared elements, keeping humidity low. A steam room generates moist heat through a steam generator, pushing humidity close to 100%. The sensation is noticeably different: dry saunas feel intensely hot on the skin but allow sweat to evaporate quickly, while steam rooms feel heavier and make you sweat more visibly because moisture can’t escape into the already-saturated air. Both induce similar physiological responses, including increased heart rate and dilation of blood vessels, but some people find the moist heat of steam rooms easier to breathe in, while others prefer the crisp intensity of a dry sauna.
What Contrast Bathing Does to Your Body
The practice of alternating between hot and cold water is central to many bathhouse traditions, and research supports several physiological effects. When you move from a hot pool to a cold plunge, your blood vessels rapidly constrict after having dilated in the heat. This alternating expansion and contraction creates a pumping effect that increases blood flow and oxygen delivery to your muscles. A study published in the Journal of Athletic Training found that a 30-minute contrast bathing session significantly increased tissue oxygenation and blood volume in the calf muscles of healthy participants. Hot water immersion for four minutes raised intramuscular blood flow and oxygen levels, while one minute of cold water reduced them, and the cycle repeated.
This mechanism is commonly used in sports rehabilitation to reduce swelling, ease muscle stiffness, and accelerate recovery after exercise. It also helps explain why so many bathhouse traditions independently arrived at the same hot-cold alternation pattern, from Roman frigidaria to Russian ice plunges to Scandinavian cold-water dips between sauna rounds.
Bathhouses as Social Spaces
Bathhouses have served as gathering places in nearly every culture that built them. Roman baths were sites for business and politics. Hammams functioned as community centers where major life events, like pre-wedding celebrations, took place. Japanese sento served as neighborhood living rooms in an era when many homes lacked private baths.
In the 20th century, bathhouses also became vital social spaces for gay men, particularly in the United States. During the 1950s, when homosexuality was criminalized in most jurisdictions, bathhouses served as some of the only safe gathering spaces available. They were described at the time as “oases of homosexual camaraderie” and “places where it was safe to be gay.” These spaces faced significant legal pressure, including police raids dating back to the early 1900s. The first recorded raid on a gay bathhouse in the U.S. occurred in 1903. During the AIDS crisis of the 1980s, political lobbying forced closures in several cities, as bathhouses were blamed for contributing to the spread of HIV.
The Modern Bathhouse Revival
A new wave of bathhouse-style venues has emerged in major cities since the early 2020s, blending traditional hot-cold therapy with a social club model. Concepts like Othership, Remedy Place, and Bathhouse (all based in New York or Los Angeles) raised capital shortly after the pandemic, tapping into a growing demand for in-person social experiences that don’t revolve around alcohol. These spaces offer structured classes, guided breathwork sessions, community events, and social lounges alongside their saunas and ice baths.
The core offering at most of these venues is contrast therapy, but the design philosophy is fundamentally social. Unlike traditional spas, which tend toward quiet and isolation, these clubs are built for interaction. Othership hosts singles nights and founders’ gatherings. Remedy Place provides corporate event packages as alternatives to bar-based parties. The appeal cuts across a specific demographic: millennials and Gen X adults looking for spaces that combine community, stress relief, and physical wellness in one place. As one wellness strategist put it, these clubs sit at the intersection of two realities: hot and cold therapies deliver real health benefits, and people are increasingly stressed and lonely.
Water Safety and Sanitation
Public bathhouses and hot tubs operate under strict sanitation standards. According to CDC guidelines, the water in commercial hot tubs and spa pools must be fully cycled through filtration at least once every 30 minutes. Disinfectant levels and pH need to be tested hourly during operation, because the combination of high water temperatures, agitation, and heavy use rapidly depletes chemical residuals. Facilities are required to maintain free chlorine levels continuously and shock-treat the water at the end of each day’s use. The high turnover rate and constant monitoring make well-maintained bathhouses significantly cleaner than their warm, humid environments might suggest.