Midjourney prompt: A futuristic city with many buildings and bridges,...

A futuristic city with many buildings and bridges, with an island in the middle of it that has large domes over them. In front is an organic sphere building made from various colored crystals, with green gas coming out of its spire. The sky above should be cloudy but colorful. This artwork would have to use a vintage poster style with bold colors and high contrast. Use this photo as a reference for your design. --style raw --stylize 250 --v 6.1