Perched atop a rocky outcropping with views to surrounding canyons, Fort 137 was designed as a sustainable home using passive and active strategies. Large, operable fenestrations on the north and south facades extend the living space beyond the architectural perimeter and provide cross-ventilation and daylighting, along with expansive views. Louvered roof overhangs minimize heat gain during summer months while allowing natural light to permeate in the winter. Thick stone clad walls regulate thermal transmission.