Art Nouveau boathouse, curved wooden structure, ornate metalwork, flowing organic lines, vibrant turquoise water, lush greenery, blooming flowers, soft warm lighting, shallow depth of field, 3/4 composition, panoramic view, realistic textures, ambient occlusion, rich jewel-toned colors, emerald green, sapphire blue, amethyst purple, golden accents, intricate mosaics, stained glass windows, ornate wooden doors, rustic stone foundations, serene lake scenery, misty morning atmosphere.