Opulent art nouveau building, grand staircase, ornate metalwork, flowing organic lines, sinuous curves, stained glass windows, luxurious furnishings, velvet drapes, intricate mosaics, natural stone walls, elegant chandeliers, spacious open floor plan, high ceilings, majestic archways, ornate plasterwork, lavish decorative elements, soft warm lighting, shallow depth of field, 3/4 composition, panoramic view, realistic textures, ambient occlusion.