The Swiss national exposition of 1964 (French: Exposition nationale suisse de 1964), usually shortened to Expo64, was a world's fair held in Lausanne, more specifically in Vidy and the neighbouring Vallée de la Jeunesse, between 30 April and 25 October 1964.
Expo64 was directed by Gabriel Despland, with Alberto Camenzind as chief architect, Edmond Henri as administrative director, and Paul Ruckstuhl as financial director. The syndic of Lausanne, Georges-André Chevallaz, was also part of the direction committee.
Expo64 was divided into eight sectors:
The main attractions of the exposition were:
The results of the sociological study Un jour en Suisse were subject to censorship, both with the selection of question (questions such as "can one be a good Swiss while being a conscious objector", "not believe in God", "support the right to abortion" were suppressed) and later when the answers were processed and suggested results that the Federal Council found embarrassing. 580'000 people, out of 12 millions visitors, answered the study.
Some of the attractions of Expo64 still exist and can be seen on the lakeside:
Furthermore, the A1 motorway between Lausanne and Geneva, built for Expo64, is still in operation, along with the Maladière roundabout at the end of the A1. An aerial tramway in Les Diablerets connecting the Scex Rouge, at nearly 3,000 metres, was also inaugurated in occasion of the exhibition.