Trying to make the current heat wave a little more bearable, we present this natural swimming pool designed by Herzog & de Meuron in the town of Riehen, in the outskirts of Basel.

With the idea of satisfying the demands of the locals to have a new public swimming pool to replace the baths by the riverbank, Herzog & de Meuron studio started to think about the options for a new bathroom facility. Due to its geographical context, they chose a concept of natural pool, where mechanical and chemical treatment elements are replaced by natural filtering systems. Besides the swimming pool, the project includes a facilities building and a solarium area.

Description of the project by Herzog & de Meuron
The Swiss municipality of Riehen, bordering the city of Basel, lies in the gently widening valley of the River Wiese, near to its confluence with the Rhine. For decades, the local population has yearned for a new public swimming pool to replace the obsolescent baths by the riverbank, with various attempts having failed. After winning a design competition in 1979 and several unrealised projects in the following years, Herzog & de Meuron again started to ponder the options for a new bathing facility. The changed perspectives brought by the intervening years prompted the idea of abandoning the conventional pool concept with its mechanical and chemical water treatment systems in favour of a pool closer to a natural condition with biological filtration. This approach was publicly discussed by the citizens of Riehen and officially approved by a municipal vote. The standard geometric swimming pool transforms into a bathing lake where the technical systems and machine rooms vanish, to be substituted by planted filtering cascades. This concept led to the notion of modelling the natural pool on the local “Badi”, Basel’s traditional wooden Rhine-side baths, which combine a lively atmosphere with a timeless appearance.
The site is screened on two sides by an enclosing timber wall: on the north towards the road and on to the west from adjoining private properties. The southern perimeter facing the river, on the other hand, is open, bounded only by a green hedge. On the eastern front, a timber fence merges into the amenities building, which incorporates the entrance and supporting facilities, while the wall along the northern and western boundaries offers a 200 m long sheltered solarium with recliners. Yet, from all parts of the facility, attention is focused on the bathing pond at the centre of the site. The biological water treatment basins – the non-mechanical “heart” of the baths – are embedded in the sloping landscape on the opposite side of the road. Together with various leisure facilities provided here, they form a recreational area open all year round to the municipal population. In terms of ecological cleaning capacity, the baths are designed to accommodate 2 000 bathers per day.
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Architects
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Herzog & de Meuron.
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Dates
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2007-2008 (Project), 2010-2014 (Realization), 06/2014 (Opening).
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Site area
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15243 m²
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Gross Floor Area
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324 m²
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Landscape Design
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Fahrni und Breitenfeld, Basel, Switzerland Wasserwerkstatt, Bamberg, Germany.
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Herzog & de Meuron Architekten is a Swiss architecture firm, founded and headquartered in Basel, Switzerland in 1978. The careers of founders and senior partners Jacques Herzog (born 1950), and Pierre de Meuron (born 1950), closely paralleled one another, with both attending the Swiss Federal Institute of Technology (ETH) in Zürich. They are perhaps best known for their conversion of the giant Bankside Power Station in London to the new home of the Tate Museum of Modern Art (2000). Jacques Herzog and Pierre de Meuron have been visiting professors at the Harvard University Graduate School of Design since 1994 (and in 1989) and professors at ETH Zürich since 1999. They are co-founders of the ETH Studio Basel – Contemporary City Institute, which started a research programme on processes of transformation in the urban domain.

Herzog & de Meuron is a partnership led by five Senior Partners – Jacques Herzog, Pierre de Meuron, Christine Binswanger, Ascan Mergenthaler and Stefan Marbach. An international team of 38 Associates and about 362 collaborators.

Herzog & de Meuron received international attention very early in their career with the Blue House in Oberwil, Switzerland (1980); the Stone House in Tavole, Italy (1988); and the Apartment Building along a Party Wall in Basel (1988).  The firm’s breakthrough project was the Ricola Storage Building in Laufen, Switzerland (1987).  Renown in the United States came with Dominus Winery in Yountville, California (1998). The Goetz Collection, a Gallery for a Private Collection of Modern Art in Munich (1992), stands at the beginning of a series of internationally acclaimed museum buildings such as the Küppersmühle Museum for the Grothe Collection in Duisburg, Germany (1999). Their most recognized buildings include Prada Aoyama in Tokyo, Japan (2003); Allianz Arena in Munich, Germany (2005); the new Cottbus Library for the BTU Cottbus, Germany (2005); the National Stadium Beijing, the Main Stadium for the 2008 Olympic Games in Beijing, China; VitraHaus, a building to present Vitra’s “Home Collection“, Weil am Rhein, Germany (2010); and 1111 Lincoln Road, a multi-storey mixed-use structure for parking, retail, a restaurant and a private residence in Miami Beach, Florida, USA (2010), the Actelion Business Center in Allschwil/Basel, Switzerland (2010). In recent years, Herzog & de Meuron have also completed projects such as the New Hall for Messe Basel Switzerland (2013), the Ricola Kräuterzentrum in Laufen (2014), which is the seventh building in a series of collaborations with Ricola, with whom Herzog & de Meuron began to work in the 1980s; and the Naturbad Riehen (2014), a public natural swimming pool. In April 2014, the practice completed its first project in Brazil: the Arena do Morro in the neighbourhood of Mãe Luiza, Natal, is the pioneering project within the wider urban proposal “A Vision for Mãe Luiza”.

Herzog & de Meuron have completed 6 projects since the beginning of 2015: a new mountain station including a restaurant on top of the Chäserrugg (2262 metres above sea level) in Toggenburg, Switzerland; Helsinki Dreispitz, a residential development and archive in Münchenstein/Basel, Switzerland; Asklepios 8 – an office building on the Novartis Campus in Basel, Switzerland; the Slow Food Pavilion for Expo 2015 in Milan, Italy; the new Bordeaux stadium, a 42’000 seat multifunctional stadium for Bordeaux, France; Miu Miu Aoyama, a 720 m² boutique for the Prada-owned brand located on Miyuki Street, across the road from Prada Aoyama, Tokyo, Japan.

In many projects the architects have worked together with artists, an eminent example of that practice being the collaboration with Rémy Zaugg, Thomas Ruff and with Michael Craig-Martin.

Professionally, the Herzog & de Meuron partnership has grown to become an office with over 120 people worldwide. In addition to their headquarters in Basel, they have offices in London, Munich and San Francisco. Herzog has explained, “We work in teams, but the teams are not permanent. We rearrange them as new projects begin. All of the work results from discussions between Pierre and me, as well as our other partners, Harry Gugger and Christine Binswanger. The work by various teams may involve many different talents to achieve the best results which is a final product called architecture by Herzog & de Meuron.”

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Published on: July 4, 2016
Cite: "Naturbad Riehen, a natural swimming pool by Herzog & De Meuron" METALOCUS. Accessed
<http://www.metalocus.es/en/news/naturbad-riehen-a-natural-swimming-pool-herzog-de-meuron> ISSN 1139-6415
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