Tower House is a stairway to the treetops that uses the reflectivity of glass to blend into the natural environment. Keeping the footprint to a minimum—so as not to disturb the wooded site—each of the first three floors has only one small bedroom and bath. The living spaces on the top floor spread out from the tower like the surrounding forest canopy, providing views of a reservoir and the Catskill mountains in the distance. A sustainable strategy reduces the heating footprint of the house in the winter and eliminates the need for air conditioning during the summer.