From Wiki: Habitat 67, or simply Habitat, is a model community and housing complex in Montreal, Canada designed by Israeli–Canadian architect Moshe Safdie. It was originally conceived as his master's thesis in architecture at McGill University and then built as a pavilion for Expo 67, the World's Fair held from April to October of 1967. It is located at 2600 Avenue Pierre-Dupuy on the Marc-Drouin Quay next to the Saint Lawrence River. Habitat 67 is widely considered an architectural landmark and one of the most famous and significant buildings in both Montreal and Canada as a whole. Habitat 67 comprises 354 identical, prefabricated concrete forms arranged in various combinations, reaching up to 12 stories in height. Together these units create 148 residences of varying sizes and configurations, each formed from between one to eight linked concrete units. The complex originally contained 158 apartments, but several apartments have since been joined to create larger units, reducing the total number. Each unit is connected to at least one private terrace, which can range from approximately 225 to 1,000 square feet (20.9 to 93 m2) in size. The development was designed to integrate the benefits of suburban homes, namely gardens, fresh air, privacy, and multileveled environments, with the economics and density of a modern urban apartment buildings. It was believed to illustrate the new lifestyle people would live in increasingly crowded cities around the world. Safdie's goal for the project to be affordable housing largely failed: demand for the building's units has made them more expensive than originally envisioned. In addition, the existing structure was originally meant to only be the first phase of a much larger complex, but the high per unit cost of approximately C$140,000 prevented that possibility.