Operable windows, clerestory windows, solar tubes, windcatchers, ventilation towers, green roofs, living walls, vertical gardens, natural convection, stack effect, cross-ventilation, single-sided ventilation, double-sided ventilation, thermal mass, high ceilings, open floor plans, minimal obstruction, rustic wood accents, earthy color palette, abundant natural light, soft diffused lighting, 1/1 composition, symmetrical framing, airy atmosphere.