The architecture team led by Álvaro Siza Vieira + Carlos Castanheira was commissioned to design the House – Jeju House, on the South Korean island of Jeju in the Korea Strait. It's known for its beach resorts and volcanic landscape of craters and cavelike lava tubes.

Hallasan Mountain, a dormant volcano, features hiking trails, a crater lake at the 1,950m summit and nearby Gwaneumsa Temple.

Afterwards, they were commissioned to design a Tea House.
The commission seemed to be one more tea house, which is not small. Siza and Castanheira investigated what the island's teahouses were like "true masterpieces" and chose as materials for the new construction, black volcanic stone from Jeju, Afzélia pachyloba wood worked in Portugal, and copper for the roof.

As a transition space between the House and the exterior, the clients had bought an adjoining plot in the west area, to expand the gardens and also to build a place to receive guests without disturbing the privacy of the family. The tea house was located in the highest part of the plot.

The program is both a space to taste tea, but also to taste good wine, with the necessary facilities for a guest to spend the night.
 
«Designing and building in this way is the dream of any architect. At least for the ones who dream. Reality is, usually, very different. Now I know what a Tea House is and what you might drink there.»
Carlos Castanheira
 

Jeju Island Tea House by Álvaro Siza Vieira + Carlos Castanheira. Photograph by  Park Wansoon
 

Project description by Carlos Castanheira

First, we built the House – the Jeju House. Afterwards, we were asked to design a Tea House. What Is a Tea House? Was our first question. It’s such a privilege to be an architect, to be confronted with new projects, and new challenges. To solve something, study and learn.

As a buffer to the House, the clients had purchased the adjacent site to the West, so as to expand the gardens and also to build somewhere that guests could be received without disturbing the privacy of the Family and the House. To extend something which is already built and which everyone is happy with is a task that requires some reflection.

The House already had an “annexe”- the caretaker’s house - which is perfectly integrated within the overall volumes, materials, and functionality. This new “annexe” couldn’t share the humble character of an annexe. Nor, could it be something inferior, at the end of the garden, less well built and, typically, lacking in aesthetic concern. The Client’s demands, like our own, are always high.

Would we use the same materials? The same volumetric games? This seemed problematic, given the difference in the brief and in the Client’s intentions. Being curious, as ever, about traditional architecture, in this case, Korean traditional architecture, we gathered information and visited the best examples, especially the local ones on the island of Jeju. These are masterful works. Especially the ones in timber.

It appeared to us that the materials should be: stone, timber, and copper. We prepared the first proposal, so as to verify the brief and get a better understanding of the requirements and expectations. The location needed to be at the highest point on the site, from where one could marvel at the sea and the horizon. The rest would be a landscaped garden. With the building located at the centre of the new site, we had to give it connections that could be quickly and easily perceived.

The brief is quite simple. A generous living space, where one could, ceremonially, prepare, serve and taste a precious tea, but also, and with equal ceremony, open a bottle and taste an excellent wine. So, we came to realize that the classification Tea House is somewhat broader than its title. A bedroom for rest, but also somewhere a visitor could stay overnight with every comfort. A bathroom, for typical Korean use, might be full or partial.

The partitions are sliding screens that, copying and interpreting the beautiful traditional examples, allow the bedroom to be either totally or partially enclosed, or to open completely to the landscape. And it’s the same in the bathroom. Creating a game of, almost, infinite possibilities, allowing spaces to transform and change when different activities are happening. Outside, there is a generous covered veranda facing South and a large terrace, facing East.

It was decided that the Tea House would meet the ground in stone; the almost black, volcanic stone of Jeju, and that all its structure, partitions, and fixed furniture would be timber. Copper sheeting formed the roof cover. But how was this to be built? In Korea, the knowledge of how to build in timber has been lost. So, we proposed a scheme to get the construction work carried out in a workshop in Portugal and then ship out all the pre-fabricated components to be assembled in situ. Our proposition was immediately accepted and we had a new challenge.

The timber we chose was Afizélia, or Dossié – afzélia pachyloba. Experience with the Casa de Chá da Boa Nova – Álvaro Siza 1958-1963 – validated its qualities, even in a location so close to the sea and with harsh weather conditions. We had gotten used to the fact that designing and building in Korea is easy, and moreover satisfying, as in Korea the will to do things well is deep-rooted. Now it had become possible to have the timber work manufactured near my office and my home.

Sawing, testing, preparation, assembly, then disassembly and, in two containers, shipping to Korea. After that, we had to send over four Portuguese carpenters for the reassembly. Although the language may seem to be an obstacle, in fact, the construction works, concrete, and services installations proceeded without problems; the project documents were all correctly interpreted and followed. When the timber arrived, it was a case of erecting it in the synchronized pattern of the pre-fabrication plan, where the language is consensual and understood by everyone.

Everything is there but nothing is visible. As is usual in our Projects and Buildings. All the services required for absolute comfort were included, but they don’t take over. They exist but are out of view because they are nonessential, unsightly.

The connections to the House, on foot, also needed to be something natural, as if they had always existed. There’s a service connection at the upper level and another route which, from the entry point to the House, allows for a stroll in the garden, or, for access to the Tea House. A “door” makes the connection between the House and the Tea House. The garden, designed by Seo-Ahn STL Total Landscape, the same landscape architect who designed the garden of the House, is one of those surprises that almost only happens in Korea because it is the result of experience accumulated over many centuries. It happened in a “blink of an eye” and it is as if it was always there.

Designing and building in this way is the dream of any architect. At least for the ones who dream. Reality is, usually, very different. Now I know what a Tea House is and what you might drink there.


Porto-Zurich, 11th of December 2021.

More information

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Architects
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Álvaro Siza, Carlos Castanheira, Jong Kyu Kim.
Practice In Portugal.- CC&CB Architects.

Practice In Korea.- M.A.R.U. Metropolitan Architecture Research Unit.

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Design team
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Project Coordinator.- Diana Vasconcelos.
Adele Pinna, João Figueiredo, Francesca Tiri, Nuno Campos.
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Collaborators
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Project Coordination.- Jong Kyu Kim.
Structural Engineering.- HDP - Construction And Engineering Projects.
Mechanical Installations.- M.A.R.U. Metropolitan Architecture Research Unit.
Collaborator.- Min Kim.
Structure.- Paulo Fidalgo.
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Builders
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Henriques e Rodrigues, J.P. Leitão, Pluggo – Wood for Life, Auro – John Klaus.
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Area
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260 m².
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Dates
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2014-2018.
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Manufacturers
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Metalwork.- NORFER.
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Photography
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Park Wansoon.
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Álvaro Joaquim Melo Siza Vieira was born in Matosinhos (near Porto), in 1933. From 1949-55 he studied at the School of Architecture, University of Porto. His first built project was finished in 1954. From 1955-58 he was collaborator of Arch. Fernando Távora. He taught at the School of Architecture (ESBAP) from 1966-69 and was appointed Professor of "Construction" in 1976. He was a Visiting Professor at the Ècole Polythéchnique of Lausanne, the University of Pennsylvania, Los Andes University of Bogotá and the Graduate School of Design of Harvard University; he taught at the School of Architecture of Porto (jubilate in 2003).

He is the author of many projects such as: the Boa Nova Tea House and Restaurant; 1200 dwellings built in Malagueira, Évora; the Superior School of Education in Setúbal, the new School of Architecture in Porto; the Library of Aveiro University; the Museum of Modern Art in Porto; the Church and Parochial Centre in Marco de Canavezes; the Pavilion of Portugal for EXPO '98 and the Pavilion of Portugal in Hannover 2000 (with Souto de Moura); the dwelling and offices complex of “Terraços de Bragança” in Lisbon; and he has rebuilt the burnt area of Chiado in Lisbon since 1988, including the projects for some buildings like Castro e Melo, Grandella, Chiado Stores, and others.

He has been coordinated the plan of Schilderswijk's recuperation in The Hague, Holland, since 1985, which finished in 89; in 1995 he finished the project for blocs 6-7-8 in Ceramique Terrein, Maastricht.

In Spain he has completed the projects for the Meteorological Centre of Villa Olimpica in Barcelona; the Museum of Contemporary Art of Galicia and the Faculty of Information Sciences in Santiago de Compostela; the Rectorate of the Alicante University; Zaida building – offices, commercial and dwelling complex in Granada; Sportive Complex Cornellà de L’lobregat in Barcelona.

Cultural Centre and auditorium for the Ibere Camargo Foundation in Brazil; Municipal Centre of Rosario in Argentina; lodging-house in the Plan of Recuperation and Transformation of Cidade Velha in Cap Vert; Serpentine Pavillion (2005) with Eduardo Souto Moura; Museum of Modern Art of Naples in Italy; Anyang Pavilion in South Korea (with Carlos Castanheira); Mimesis Museum in South Korea (with Carlos Castanheira); are to be mentioned.

He has participated in several lectures and conferences in Portugal, Spain, Italy, Germany, France, Norway, Holland, Switzerland, Austria, England, Colombia, Argentina, Brazil, Japan, Canada, United States, Romania, Greece, South Korea and Sweden.

Having been invited to participate in international competitions, he won the first place in Schlesisches Tor, Kreuzberg, Berlin (now built), at the recuperation of Campo di Marte in Venice (1985) and at the renewal of Casino and Café Winkler, Salzburg (1986); Cultural Centre for the La Defensa, Madrid (with José Paulo Santos) (1988/89); J. Paul Getty Museum, Malibu, California (with Peter Testa) (1993); Pietà Rondanini Room, Sforzesco Castell, Milan (1999); Special Plan Recoletos-Prado, Madrid (with Juan Miguel Hernandez Leon e Carlos Riaño) (2002); Toledo Hospital (Sánchez-Horneros office) (2003); “Atrio de la Alhambra” in Spain (with Juan Domingo Santos)(2010); “Parco delle Cave”, Lecce in Italy (with Carlos Castanheira) (2010).

He has participated in the competitions for Expo 92 in Sevilla, Spain (with Eduardo Souto de Moura and Adalberto Dias) (1986); for "Un Progetto per Siena", Italy (with José Paulo Santos) (1988); the Cultural Centre La Defensa in Madrid, Spain (1988/89); the Bibliothèque of France in Paris (1989/90), the Helsinki Museum (with Souto de Moura) (1992-93); Flamenco City of Xerez de la Frontera, Spain (with Juan Miguel Hernandez Leon) (2003).

From 1982 to 2010 has won many different awards and have been assigned with Medals of Cultural Merit from many country around the world. Doctor "Honoris Causa" in various European and International universities.

He is a member of the American Academy of Arts and Science; "Honorary Fellow" of the Royal Institute of British Architects; AIA/American Institute of Architects; Académie d'Architecture de France and European Academy of Sciences and Arts; Royal Swedish Academy of Fine Arts; IAA/International Academy of Architecture; American Academy of Arts and Letters.

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Carlos Castanheira was born in Lisbon in June 1957. Graduated in Architecture from the Porto School of Fine Arts (1976-1981), he lived in Amsterdam from 1981 to 1990, where he worked as an architect and studied at the Academie Voor Bouwkunst Van Amsterdam.

In 1993 he founded the studio Carlos Castanheira & Clara Bastai, Arquitectos Lda. with Architect Maria Clara Bastai. Working mainly in the private sector, she has served as a jury in competition panels, participated in conferences, participated in the creation of architectural education courses and workshops, curated and organized exhibitions, and edited and published books and catalogues.

Since he was a student he has collaborated with the architect Álvaro Siza in several projects in Portugal but, above all, abroad.
 
2005.– National Prize for Architecture in Timber – AIMMP with the project “Avenal House,” Ul Oliveira de Azeméis, Portugal.

2011.– National Prize for Architecture in Timber  – AFN/MA with project “Adpropeixe House”, Terras do Bouro, Gerês, Portugal.

2011.– Honorable Mention in National Prize for Architecture in Timber – AFN/MA with the project “Casa da Torre Winery”, Vila Nova de Famalicão, Portugal.

2015.– Best Wine of Tourism – Regional winner in category of Architecture and Landscape with project “Quinta da Faísca Winery”, Favaios, Alijó, Portugal.

2015.– Awarded by the Internacional Archdaily  in the category: “Office building of the year 2015”, with the “Building on the Water- Shihlien Chemical”, with Architect Alvaro Siza, Jiangsu, China.

2015.– Awarded with an Honorable Mention in National Prize for Architecture in Timber  – AFN/MA with Project “Equestrian Center,” Leça da Palmeira. Portugal.

2016.– Selected for the Archmarathon Awards with Álvaro Siza, with the project “Building on the Water- Shihlien Chemical”, Jiangsu, China.

2016.– One of the seven finalists projects , in Prizes of the Archdaily Platform, in the category of “Sport Building”,  with the “Equestrian  Center” in, Cabo do Mundo, Leça da Palmeira, Matosinhos.

2017.– Valmor Municipal Architecture Prize, from Lisbon City Council, with Architect Álvaro Siza with the project “Chiado Public Space.Carmo Connection”, Lisbon, concerning to the year of 2015, best project.
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