Cardiff Sauna Complex could transform the more than century-old Mount Stuart Graving Docks into one of the most interesting new sauna and swimming destinations in the UK. Finnish company Nordic Urban is preparing an approximately £17 million project featuring public saunas, a 25-metre heated outdoor swimming pool, cold-water bathing, wellness spaces, a restaurant and venues for events. The site, once used for ship repairs and largely underused for decades, is intended to become an active year-round public destination on Cardiff’s waterfront.
Mount Stuart Graving Docks are located in Cardiff Bay, Wales, and form part of the city’s industrial heritage. The docks were created when Cardiff was a major British port and industrial centre, but as the role of the harbour changed, these impressive structures gradually lost their original purpose.
Nordic Urban now proposes giving them an entirely new function – creating a place where historic architecture meets swimming, sauna, relaxation and contemporary urban life.
Cardiff Sauna Complex will operate throughout the year
The new development is called Allas Cardiff and is based on an approach increasingly familiar in the Nordic countries: urban waterfronts are used not only for walking, restaurants and summer recreation, but also for swimming, sauna and everyday public life.
The planned complex will cover approximately 2,000 square metres, with a 25-metre heated outdoor swimming pool among its main attractions. The pool is intended for year-round use, meaning swimming would not be limited to the warmer months.
Together with the saunas and cold-water facilities, it would create a complete experience built around heat, swimming and cooling down.
Saunas, a heated pool and cold water in one place
Sauna will be one of the central elements of Allas Cardiff. The plans include several saunas and wellness spaces alongside the heated outdoor pool and opportunities for cold-water bathing.
This combination of heat and cold is well established in Nordic sauna culture, but it remains a relatively new feature of everyday urban life in the UK.
Particularly significant is the intention to operate the complex 365 days a year. During the colder months, a hot sauna and heated outdoor pool could give people a reason to visit the waterfront when traditional beaches and recreation areas are usually much quieter. In this sense, the project could change the role of the waterfront itself, turning it from seasonal infrastructure into a year-round destination.
Historic ship docks will gain an entirely new purpose
Mount Stuart Graving Docks were originally constructed for servicing and repairing ships. A vessel could be moved into a dry dock, the gates closed and the water pumped out, allowing workers to access the hull below the waterline.
Such work required substantial engineering structures, which is why the docks remain an impressive reminder of Cardiff’s industrial history.
The new project does not attempt to erase that past. Instead, the historic structures are intended to become part of the new swimming and sauna environment. A place designed more than a century ago for ships and industry could therefore take on a completely different role centred on people, recreation and wellbeing.
Industrial heritage will be reused rather than demolished
The approach is also interesting from an architectural perspective. Former industrial sites are often located on highly valuable waterfront land, even though their original functions are no longer required by modern cities.
One option is to demolish the old structures and redevelop the site from scratch. Another is to preserve its historic character while finding a new contemporary use.
Allas Cardiff follows the second approach. People could come here to swim, use the sauna, cool down, eat, meet friends and attend events while the historic dock environment remains visible around them.
Industrial heritage therefore becomes more than a decorative backdrop – it becomes part of the experience itself.
Culture and events are also part of the project
Allas Cardiff is not intended to be simply a swimming pool with several saunas. The plans also include a restaurant with outdoor seating, multifunctional indoor spaces, wellness programmes, cultural events and other activities.
This could attract people who do not necessarily intend to swim or use a sauna during every visit.
Such an approach turns the public sauna into a social space. Someone might arrive for swimming and sauna, then stay for a meal or meet friends. Another visitor might come only for an event or the restaurant.
As a result, sauna is no longer an isolated service. It becomes one element within a much broader piece of urban public life.
Finnish experience is being brought to Wales
Nordic Urban is not starting from scratch. The company’s best-known project is Allas Pool Helsinki, located in central Helsinki beside the sea.
The complex combines outdoor swimming pools, saunas, food and drink, events and public urban space in one waterfront location.
In Cardiff, that experience is being adapted to a very different setting. In Helsinki, the sea and Finland’s public sauna culture are central to the experience. In Cardiff, the historic dry docks give the project its distinctive identity.
The Finnish model is therefore not simply being copied. It is being adapted to the history, architecture and character of a specific city.
The project is valued at approximately £17 million
Investment in Allas Cardiff is expected to total approximately £17 million.
That makes it clear that this is not a small urban sauna project but a substantial piece of public recreation and wellness infrastructure.
Nordic Urban will need to take the development through Cardiff’s planning and approval process before construction can begin. Particular attention will be required to preserve the historic docks because the structures form part of the area’s protected industrial heritage.
Allas Cardiff is therefore still a proposal rather than a completed sauna complex. Nevertheless, the scale of the plans already indicates how dramatically this currently underused site could change.
Cardiff wants to bring people back to the water
Across Europe, former port and industrial areas have undergone similar transformations in recent decades. Places once dedicated to ships, warehouses and manufacturing are increasingly becoming residential, cultural and recreational districts.
Cardiff Bay is no exception.
Allas Cardiff uses sauna and swimming as tools to attract people to the waterfront throughout the year. That matters because a public waterfront becomes far more valuable to a city when it remains active not only during a few summer months but also on a cold winter evening.
Public sauna is becoming part of urban infrastructure
The Cardiff project continues a trend that is becoming increasingly visible across Europe. Vilnius is planning public saunas beside the River Neris in Vingis Park, public saunas have already become part of everyday city life in Helsinki, and elsewhere in Northern Europe sauna is increasingly being combined with swimming and public waterfront spaces.
This is changing the role of the public sauna itself.
Sauna is no longer confined to private homes, hotels or spa complexes. It is becoming a place where people meet, relax, swim, talk and spend time together.
In that sense, sauna is beginning to serve not only a wellness function but also a social and urban one.
Historic docks could become one of the UK’s most unusual sauna destinations
Allas Cardiff still has to pass through the planning and approval process, so there is no guarantee that every element will be built exactly as currently proposed.
Even so, the combination is already unusual: century-old ship docks, a 25-metre heated outdoor pool, cold-water bathing, saunas, a restaurant and cultural events within one historic waterfront environment.
Cardiff Sauna Complex shows how quickly the role of public sauna is changing in Europe. Sauna is no longer viewed simply as a hot room – it is becoming a tool cities can use to revive waterfronts, preserve industrial heritage and create new places for everyday public life.
If the approximately £17 million project is realised, the historic Mount Stuart docks could be transformed from former ship-repair infrastructure into one of the UK’s most unusual public sauna and swimming destinations.
Sources
Nordic Urban – information about the Allas Cardiff project.
Cardiff Council – information about the development of Mount Stuart Graving Docks.
CoStar News – information about the £17 million Allas Cardiff project.
