In a whimsical fusion of steampunk and Art Nouveau, depict a celestial-themed carnival set on a floating island in the clouds during a golden hour sunset. The island is bustling with Victorian-era inventors showcasing their fantastical contraptions, like clockwork birds and steam-powered hot air balloons. Elegant, vine-like ironwork structures rise around, adorned with iridescent stained glass illuminated by the soft glow of lanterns. In the sky, mythical creatures such as griffins and flying mechanical whales glide gracefully. This visionary scene captures a harmonious blending of intricate machinery and organic motifs, exuding an atmosphere of wonder and nostalgia as visitors, dressed in both Edwardian and bohemian festival attire, marvel at the surreal blend of nature and human innovation.