G. Addor, J. Bolliger, D. Julliard, L. Payot, Cité du Lignon, Ginebra (1963-1967)

Conventional or singular, sometimes spectacular and even monumental, contemporary residential heritage is indeed rich and varied. Today, the trivial operations designed to quickly address housing demand during the years of strong economic growth in the mid-20th century share the urbanized territory with other developments that are noteworthy for their technical, formal and typological innovation. In spite of their heritage value and, in some cases, their monumental nature, this type of development is particularly sensitive to energy issues. In the current context of Europe, determined to develop policies to renovate the housing stock, the architecture of the second half of the 20th century, especially of the period between 1950 and 1970 (that is, before the oil crisis of 1973), can become a priority objective because of its building features and materials, often very experimental or poorly insulated...