From Roman Baths to Global Wellness: Thermal Spa Demand Set for 6.2% CAGR Growth
Roman bathers, almost two millennia ago, would gather by Bath’s naturally warm mineral springs because of precisely the same motivations that people have today for lining up outside Thermae Bath Spa: to bathe, to relax, and to feel a bit better. That thread running from antiquity to the present hasn’t just survived it’s turning into serious business. The latest international market research data indicates that the particular sector where Bath originally made its name, namely hot spring/thermal bathing, is now showing a steady growth rate of 6.2% per annum, part of an explosive international wellness spa industry that will double in value by the mid-2030s.
That’s some news for a city that is built entirely on its springs.
A City Built on What the World Now Wants
Bath’s Roman Baths and the modern Thermae Bath Spa, fed by the UK’s only naturally occurring hot springs, sit at the historic heart of a global industry now measured in the billions. According to recent market analysis from Dataintelo, hot spring bathing is the single largest service category in the global thermal spa market, commanding roughly a third of all spending in the sector and continuing to expand at that 6.2% annual clip through 2034.
It’s a neat validation of something Bath has always known instinctively: there’s nothing quite like naturally heated mineral water. While newer treatments — hydrotherapy pools, mud therapy, infrared saunas — are carving out their own growth stories, the simple, ancient act of soaking in geothermally warmed water remains the anchor of the entire wellness spa economy, in Bath and well beyond it.
The Bigger Picture: A Booming Global Market
Zoom out, and the numbers get even more striking. The broader thermal spa industry — covering hot springs, hydrotherapy, mud treatments and steam bathing across resorts, hotels, day spas and dedicated wellness retreats — was valued at around $6.8 billion in 2025 and is forecast to climb toward $12.4 billion by 2034, according to the same industry research. That works out to an overall CAGR close to 6.9%, with some individual segments, like hydrotherapy and destination spa stays, growing even faster.
Europe is still considered the leading thermal spa destination on Earth, accounting for more than a third of the total worldwide market, as the practice of “taking the waters” has been going on in the continent for many years in places such as Baden-Baden, Budapest, and even Bath. It is important to note that Thermae Bath Spa is constantly mentioned as one of those few destinations that form its heritage.
The reasons for the success of thermal spas at the present moment
Several factors contribute to their success, and all of them might seem familiar to those who visited a spa in Bath:
Wellness tourism is developing rapidly. More and more tourists wish to return home not only more relaxed but also healthier after their holidays. In fact, the number of wellness tourism is growing faster than tourism in general these days, and thermal spas are among its central elements.
Preventive health is becoming more popular. Instead of waiting for a problem, people prefer to use thermal facilities – hot mineral springs, steams, mud baths – as one of the ways of dealing with stress and pains.
Hotel owners are spending money on the development of spa amenities. Large hotel chains are constructing thermal circuits, hydrotherapy pools and mineral baths in their newest properties since good spa services drive up the room rates and create guest loyalty.
Therapeutic baths become more popular because of ageing clientele. The long and documented tradition of the usage of thermal treatments for musculoskeletal disorders such as arthritis or back pains will ensure an increasing need from the elderly guests.
Technological advancements help spas to become more intelligent. From booking procedures to personalizing therapy programs, technology is helping thermal spas attract more customers.
What This Means for Bath
None of this is theory for a city such as Bath. With increasing demand across the world for genuinely immersive natural thermal experiences, the value of Bath’s status will only increase because the town does not have to chase this trend, but rather create it. The Thermae Bath Spa itself attracts hundreds of thousands of people every year who come to use Britain’s only naturally hot spring, while the entire “Health & Wellbeing” industry within the city – from exclusive beauty parlors to massage studios – fits perfectly within this narrative.
With more travelers seeking authentic wellness experiences as opposed to standard pampering services, heritage cities with a lot of actual heritage – be it ancient Roman architecture, pure mineral water, or something else – gain an advantage which no artificially created spa resort towns can replicate. For Bath, this means continuing the narrative and emphasizing its Roman origins as the city develops and modernizes its tourist facilities, much like it did with the development of the Thermae Bath Spa complex.
A Look into the Future
Analysts see this trend continuing in an incremental manner, rather than taking off suddenly, due to higher spending on wellness in Asia, investments from high-end hotels around the world, and a growing number of studies supporting the positive effects of thermal bathing on health and wellbeing. In a billion-dollar industry today, the appeal is surprisingly straightforward – just like it was for the Romans, who came to Bath all those centuries ago for its hot springs.
Reference: https://dataintelo.com/report/thermal-spa-market
Author Bio:
Ashish Kolte is a Marketing Manager at DataIntelo with expertise in marketing, market intelligence, and business strategy. He combines marketing insights with industry research to analyze market trends, identify growth opportunities, and provide data-driven perspectives on emerging industries and global business developments.
LinkedIn: https://www.linkedin.com/in/ashishkolte/