Location from Steelheart by Brandon Sanderson
Formerly Chicago — every surface turned to solid steel by Steelheart, plunged into permanent darkness by Nightwielder, and home to millions who live underground because the surface belongs to a god.
Newcago is organized vertically. The Overstreets — the surface level — belong to Epics and their favored humans. Below that, the Understreets: tunnels carved into the steel at various depths, lit by fluorescents at shallow levels and increasingly dim as you go deeper. Below the Understreets are the Steel Catacombs — a labyrinth of confusing tunnels carved by Diggers who went mad, now home to the poorest residents and the Reckoners' hidden base. The city runs on Conflux's electricity. Enforcement (Steelheart's military police) maintains order with brutal efficiency. The population lives in fear because fear is the system: Steelheart is invulnerable to those who fear him, and his regime ensures everyone does. After Steelheart's death, Newcago enters a power vacuum. Mitosis attacks. Other Epics move in. The city's liberation isn't clean or easy — killing a tyrant doesn't automatically create freedom.
A city of steel. Every building, every street, every bridge — transmuted from concrete, glass, and asphalt into solid, gleaming metal. The skyline is Chicago's, frozen in steel, under a sky of permanent black fog. No sunlight penetrates. The steel doesn't rust (Nightwielder's darkness prevents it). Lake Michigan is frozen steel — a flat, metallic plain where Steelheart built his palace. The city looks like a monument to industrial dystopia: beautiful in its terrible way, lit only by artificial lights and the faint glow of Enforcement patrols.
Also known as: Chicago, Steel City