During the Roman Empire, but during the Industrial Revolution, powered by steam engines (steampunk). The city's sewer system is its greatest asset, a gigantic, multi-level system. But now it's overrun with cursed rats, and the water is contaminated, appearing like a black swamp whose surface bulges with bubbles. This captivating image, executed in a unique ancient fantasy style against the backdrop of the high architecture of the Roman Empire, conveys the unreal nature of the site with stunning detail in muted tones. Overall, this high-quality work of art immerses the viewer in an atmosphere of mysterious admiration and a desire to get closer to it.