Sigil

At the center of everything, the City of Doors waits to open.

Sigil is the legendary City of Doors, serving as the central hub of the Dungeons & Dragons multiverse. Located within the neutral plane known as the Outlands, this floating metropolis acts as a crossroads where all planes and realities converge. It is a place where mortals, gods, and monsters coexist under a unique set of laws enforced by an unseen power.

Quick Facts

First

Planescape Campaign Setting (1994)

Creator

David "Zeb" Cook

Genre

Role-playing game

Located in

Outlands

Ruler

Lady of Pain

Locations

The Lady's Ward
The Lower Ward
The Market Ward
The Guildhall Ward
The Clerk's Ward
The Hive

Facts from the source article.

Background

The city itself is a labyrinth of brass gates that lead to every corner of creation, though finding the right key is often more difficult than finding the door. Because Sigil sits at the intersection of all realities, it is filled with strange architecture and impossible geography. Time flows differently here compared to other planes, and the laws of physics bend to accommodate the sheer volume of travelers passing through its streets.

Did You Know?

Sigil is often referred to as 'The Cage' because its walls prevent anyone from escaping into the Outlands without permission.
Magic is fully functional in Sigil unless it is used specifically against the Lady herself.