The book is about the question of time in the urban project of Chandigarh. It takes stock of the entire period of conception of the city from 1951 to the death of Pierre Jeanneret in 1965. While there have been many publications on the city, this one details the very conception of the city, linking the urbanism and the architecture to the archives of the Le Corbusier Foundation. Our ambition in make this information accessible to all, especially to the inhabitants and leaders of Chandigarh, is so that a detailed knowledge of the city’s design can be used to help preserve it.