Vibrant gymnasium interior, open space layout, postmodernist architecture, exposed ductwork, polished concrete floors, colorful accent walls, irregular shapes, eclectic furniture, industrial-style lighting fixtures, metal beams, wooden accents, bold typography, motivational quotes, athletic equipment, basketball hoops, treadmills, free weights, exercise machines, mirrored walls, natural stone columns, abstract sculptures, urban-inspired graffiti, dynamic shadows, high-contrast lighting, 2/3 composition, realistic textures, ambient occlusion.