The Congrès internationaux d'architecture moderne (CIAM), or International Congresses of Modern Architecture, was an organization founded in 1928 and disbanded in 1959, responsible for a series of events and congresses arranged across Europe by the most prominent architects of the time, with the objective of spreading the principles of the Modern Movement focusing in all the main domains of architecture (such as landscape, urbanism, industrial design, and many others).
The International Congresses of Modern Architecture (CIAM) was founded on June 1928, at the Chateau de la Sarraz in Switzerland, by a group of 28 European architects organized by Le Corbusier, Hélène de Mandrot (owner of the castle), and Sigfried Giedion, (the first secretary-general). CIAM was one of many 20th century manifestos meant to advance the cause of architecture as a social art.
Other founder members included Karl Moser (first president), Hendrik Berlage, Victor Bourgeois, Pierre Chareau, Sven Markelius, Josef Frank, Gabriel Guevrekian, Max Ernst Haefeli, Hugo Häring, Arnold Höchel, Huib Hoste, Pierre Jeanneret (cousin of Le Corbusier), André Lurçat, Ernst May, Max Cetto, Fernando García Mercadal, Hannes Meyer, Werner M. Moser, Carlo Enrico Rava, Gerrit Rietveld, Alberto Sartoris, Hans Schmidt, Mart Stam, Rudolf Steiger, Szymon Syrkus, Henri-Robert Von der Mühll, and Juan de Zavala. The Soviet delegates were El Lissitzky, Nikolai Kolli and Moisei Ginzburg, although at the Sarraz conference they were unable to obtain visas.
Later members included Minnette de Silva, Walter Gropius, Alvar Aalto, Uno Åhrén, Louis Herman De Koninck (1929) and Fred Forbát. In 1941, Harwell Hamilton Harris was chosen as secretary of the American branch of CIAM, which was the Chapter for Relief and Post War Planning, founded in New York City. Josep Lluís Sert participated in the congresses as of 1929, and served as CIAM president from 1947 to 1956. He was co-founder of GATEPAC and GATCPAC (in Saragoza and Barcelona, respectively) in 1930, as well as ADLAN (Friends of New Art) in Barcelona in 1932.
The elected executive body of CIAM was CIRPAC, the Comité international pour la résolution des problèmes de l'architecture contemporaine (International Committee for the Resolution of Problems in Contemporary Architecture).
The organization was hugely influential. It was not only engaged in formalizing the architectural principles of the Modern Movement, but also saw architecture as an economic and political tool that could be used to improve the world through the design of buildings and through urban planning.
The fourth CIAM meeting in 1933 was to have been held in Moscow. The rejection of Le Corbusier's competition entry for the Palace of the Soviets, a watershed moment and an indication that the Soviets had abandoned CIAM's principles, changed those plans. Instead it was held onboard ship, the SS Patris II,SS Patris II],[a] which sailed from Marseille to Athens. Here the group discussed the principles of "The Functional City", which broadened CIAM's scope from architecture into urban planning. Based on an analysis of thirty-three cities, CIAM proposed that the social problems faced by cities could be resolved by strict functional segregation, and the distribution of the population into tall apartment blocks at widely spaced intervals. These proceedings went unpublished from 1933 until 1943, when Le Corbusier, acting alone, published them in heavily edited form as the Athens Charter.
As CIAM members travelled worldwide after the war, many of its ideas spread outside Europe, notably to the USA. The city planning ideas were adopted in the rebuilding of Europe following World War II, although by then some CIAM members had their doubts. Alison and Peter Smithson were chief among the dissenters. When implemented in the postwar period, many of these ideas were compromised by tight financial constraints, poor understanding of the concepts, or popular resistance. Mart Stam's replanning of postwar Dresden in the CIAM formula was rejected by its citizens as an "all-out attack on the city."
The CIAM organization disbanded in 1959 as the views of the members diverged. Le Corbusier had left in 1955, objecting to the increasing use of English during meetings.
For a reform of CIAM, the group Team 10 was active from 1953 onwards, and two different movements emerged from it: the Brutalism of the English members (Alison and Peter Smithson) and the Structuralism of the Dutch members (Aldo van Eyck and Jacob B. Bakema).
CIAM's conferences consisted of: