Elegant Art Nouveau buildings, curved steel beams, ornate metalwork, flowing organic lines, sinuous shapes, grand entrances, sweeping staircases, decorative iron railings, stained glass windows, vibrant colorful mosaics, luxurious interior designs, warm golden lighting, shallow depth of field, 1/2 composition, realistic textures, ambient occlusion, metropolitan cityscape, urban renewal projects, modern architectural innovations, sustainable construction methods, eco-friendly materials, innovative engineering solutions.