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Architect Moshe Safdie created a design that was unlike anything else for apartments—a high-density arrangement of homes with gardens, with ­modular interlocking building forms. Once combined, it became a piece of art unto itself. When I first saw Habitat 67, it struck me to see the effect an architect could have on the built ­environment utilizing new technologies. It was very inspiring for a child to see during the ’67 world expo. Although it never caught on, it is innovative even today.

—Mark Humphreys, CEO, Humphreys & Partners Architects, Dallas