A highly detailed digital painting of a majestic floating city suspended in the sky, featuring towering spires, intricate bridges, and lush, vibrant gardens. The city is enveloped by fluffy white clouds, with a radiant rainbow arching gracefully across the scene. Its design blends steampunk and fantasy aesthetics, with visible gears, cogs, and magical elements seamlessly integrated into the architecture. The lighting is soft and ethereal, casting a gentle glow that enhances the dreamy, otherworldly atmosphere. The composition captures the grandeur and mystique of this enchanting aerial metropolis.