Ornate Art Nouveau exhibition center, flowing organic lines, sinuous curves, biomorphic forms, vibrant greenery, intricate metalwork, stained glass windows, grand entrance archways, ornamental columns, sweeping staircases, luxurious velvet drapes, rich wooden paneling, elegant chandeliers, soft warm lighting, shallow depth of field, 1/1 composition, close-up shots, detailed textures, ambient occlusion.