Large sports stadium, natural ventilation system, open-air design, green roofs, solar panels, wind turbines, clerestory windows, high ceilings, exposed ductwork, steel beams, concrete structure, retractable roof, grassy playing field, athletic tracks, tiered seating, vibrant crowd, sunny day, soft warm lighting, shallow depth of field, 3/4 composition, panoramic view, realistic textures, ambient occlusion.