Originally built in 1955, this modest penthouse apartment typified the small, separated living spaces of its era. The design challenge was how to create a home that reflected contemporary taste and the client’s desire for an environment rich in materials and textures. The keys to updating the space were threefold: break down the existing divisions between rooms; emphasize the connection to the adjoining 850-square-foot terrace; and establish an overarching visual harmony for the home through the use of simple, elegant materials. The renovation preserves and enhances the home’s mid-century roots while bringing the design into the 21st century—appropriate given the apartment’s location just a few blocks from the fairgrounds of the 1962 World’s Fair.