The building also incorporates shops including an architectural bookshop, a rooftop gallery, educational facilities, a hotel that is open to the public, and a restaurant, “Le Ventre de l’Architecte” (“The Belly of the Architect”).
It was a huge trend after the war for a variety of economic and ideological reasons.
Look up also extremely influential architect and noted fascist Le Corbusier.
https://en.wikipedia.org/wiki/Unité_d'habitation
It was a huge trend after the war for a variety of economic and ideological reasons.