Dunwall is the capital city on the island of Gristol which is besieged by plague and ruled by an oppressive government. Most of the action in Dishonored is centered in this neo-Victorian city envisioned by Half-Life 2 art director Viktor Antonov.
Dunwall makes a return in Dishonored 2, although it is only available in the missions A Long Day in Dunwall and Death to the Empress.