A gigantic ocean stands vertically in the middle of a city like a perfectly upright transparent wall several kilometers high. Whales, submarines, coral reefs and shipwrecks float naturally inside the vertical body of water while pedestrians walk calmly along the dry street directly beside it. Waves crash upward instead of sideways, forming clouds at the top. Late-afternoon sunlight passes through the entire ocean and paints moving caustics across skyscrapers. Impossible physics rendered with absolute realism.