Habitat ‘67 developed out of architect Moshe Safdie’s 1961 thesis design project and report ("A Three-Dimensional Modular Building System" and "A Case for City Living" respectively). The building was realized as the main pavilion and thematic emblem for the International World Exposition and its theme, Man and His World, held in Montreal in 1967 . Born of the socialist ideals of the 1960s, Safdie’s thesis housing project explored new solutions to urban design challenges and high-density living. His ideas evolved into a three-part building system which pioneered the combined use of a three-dimensional urban structure, specific construction techniques (the prefabrication and mass-production of prototypal modules), and the adaptability of these methods to various site conditions for construction conceivably around the world (Safdie would later be commissioned to design other 'Habitat' projects in North America and abroad).The outcome of Safdie’s thesis explorations, Habitat ’67 in essence gives life to these ideas. The design for Habitat relies on the multiple use of repetitive elements, called boxes or modules, which were arranged to create 16 differently configured living spaces, for a total of 158 residences within the complex.