Industrial-style gymnasium, functionalist architecture, minimalist design, rectangular shapes, clean lines, steel beams, exposed ductwork, polished concrete floors, large windows, natural light, athletic equipment, parallel bars, balance beams, gymnastic rings, wooden sprung floors, vibrant color accents, geometric patterns, rational layouts, efficient circulation paths, modernist aesthetics, early 20th-century influences, functional simplicity, raw materials, brutalist elements, urban surroundings, cloudy skies, dramatic shadows, high-contrast lighting, shallow depth of field, 1/2 composition, realistic textures, ambient occlusion.