A Steampunk festival in an ancient Roman coliseum where Victorian-era inventors showcase hovering brass contraptions and steam-powered airships under a sky darkened by a solar eclipse, the scene merges Da Vinci-esque sketches with intricate mechanical designs, set against a backdrop of weathered stone arches overgrown with vibrant, bioluminescent ivy, and crowds dressed in a fusion of togas and elaborate steampunk attire marveling at the spectacle, where the glow of Edison bulbs and the holographic projections of gladiator games blend old and futuristic elements seamlessly.