Greyhawk City has a lot of potential, but even the most hard-core fans have to admit that the City of Greyhawk boxed set and The Adventure Begins were sub-par products (neither of them without considerable merit, of course, but not what they should have been). Even Maldin's map doesn't fix some of the fundamental flaws. The Free City really has to be rebuilt from the ground up.
Sigil the Fantastic, Sigil the Impossible, Sigil the Paradox, Sigil the Heart of Creation. Sigil the Dark, Sigil Cloaked in Smog and Shadow, Sigil the Profane, Sigil the Blasphemy, Sigil of the Razor Edges and Dangerous Angles. Sigil of Oppression and Horror, Sigil of the Eternal War, Sigil of the Tarnished Gems, Sigil Where the Angels Weep. Sigil the Beautiful, Sigil the Good, Sigil the Beacon of Hope. Sigil the Crossroads, Sigil of the Mazes, the Cage, the City of Doors. Sigil where the cultures of a million worlds blend, Sigil of the bleeding holes ripped into the fabric of the planes, Sigil the Elder Sign, Sigil of the light-boys and razorvine, of tieflings and githzerai, of touts and factotums, of cranium rats, ravens and two-headed hounds, Sigil of endless labyrinths and Golden Lords, where philosophy is worth more than gold, but where they won't say no to taking your gold as well...
There was never a contest.