4. Habitat 67
Moshe Safdie, a Canadian architect, was behind this unique experimental housing complex. Named Habitat 67, it was made using modular concrete units. Safdie attempted to redesign urban living with affordable housing design. The Habitat 67 also includes a school and shops. It could be prefabricated onsite and each module has a rooftop garden place. The plan was to build 1000 housing units to accommodate visiting dignitaries during a 1967 Expo, but unfortunately only 158 units were built, with no shops and school. Also, at about $140,000 per living unit or slightly above $22 million for the whole complex, Habitat 67 wasn’t as affordable as Safdie had hoped.