“The City of Doors.” “The Cage.” Sigil goes by many names, as well it should. The tales say Sigil sits at the center of the universe, and that one can find doors to anywhere and anywhen. Sigil stands at the crossroads of everywhere, and for those who know the secret routes, all roads lead to Sigil.

Of course, Sigil is a paradox. If the planes are infinitely large, how can Sigil be the center? If the Spire is infinitely tall, how can Sigil sit at the top?

What can change the nature of a man?

There is a lot said about the city and its factions, and maybe some of it is even true. (There were some rumors back in the day that the cold war among the factions turned hot and then went cold again. That doesn’t seem to be the case. Or maybe not the case yet.) The only constant is the Lady, but as long as she is calm, the rest doesn’t matter.

A lot has been written about Sigil. Interested parties might look here, here, here, and here.