In September 1958, The Public Establishment for Installation of La Défense  (EPAD) buildings (of which the Esso Tower was the very first) were built and began to slowly replace the city's factories, shanties, and even a few farms.
Eylül 1958 tarihinde l'Établissement public pour l'aménagement de La Défense (EPAD) binaları inşa edildi ve yavaş yavaş şehrin fabrikaları, şantiyelerini ve birkaç çiftliğin yerini almaya başladı.