"Create an image of Mare Ventum, an underwater city reminiscent of Rapture from Bioshock, with architectural influences from ancient Japan and Ancient Greece. The city is constructed from regal bronze structures, adorned with intricate designs and symbols. It is built around a massive volcanic crater, with plumes of magma visible in the distance. The technology within the city has a distinct nuclear aesthetic, reminiscent of 1950s America, with glowing panels, sleek lines, and retro-futuristic designs. The city streets are bustling with activity, as aquatic denizens go about their daily lives in this magnificent metropolis beneath the waves."