It had a public transportation train system and was built in layers with a substantial underground. The old quarter was called "the Loop", although the reason for that name had been obscured by the ages.
Berry Zilwicki and her brother Larens were inhabitants of the old quarter until they were adopted and brought to Manticore by Anton Zilwicki in the aftermath of the 1914 PD Manpower Incident. (HHA3.3: FtH)
- Detailed article about Chicago on Wikipedia