Very useful for any Planescape campaign that involved Sigil to any extent (ie nearly all). Be warned though, some of the smaller details don't actually make sense in the context of the rest of the setting. I get the impression that since this was one of the earier releases, some of the details hadn't been nailed down. (ie. having a bunch of Doomguardsmen guarding an enormous statue of a nic'Epona; having teleportation pads that lead out of Sigil on the statue's pedestal come to mind.)<br><br><b>QUALITY</b>: Acceptable<br><br><b>VALUE</b>: Satisfied<br>