Angel wrote a great summary (his review linked). Great city but for a large city has only one entrance through its walls. Well, two. One entrance from the west and a second to the east. Ancient Rome had several.
Angel's Citadel reviewed this title. You can find our thoughts here: https://angelscitadel.com/2021/05/21/review-ptolus-monte-cooks-city-by-the-spire/
TL;DR: HOLY CRAP this is a lot of book. If you dig fantasy at all and play 5E or Cypher System, you should own this.