Natural ventilation system, operable windows, clerestory windows, skylights, solar tubes, wind catchers, air vents, breathable materials, green roofs, living walls, vertical gardens, internal courtyards, open floor plans, minimal partitions, thermal mass, insulation systems, shading devices, overhangs, louvers, natural convection, cross ventilation, stack effect, cool breezes, warm sunlight, soft diffused light, ambient temperature control, energy-efficient design, sustainable architecture, eco-friendly buildings, comfortable indoor climate, healthy air quality.