What name did C.S. Lewis give the main city in The Great Divorce?

C.S. Lewis called the main city in The Great Divorce the Grey Town.

The Great Divorce, published in 1945, is a short theological fantasy narrated by a passenger on a bus journey from the Grey Town to the outskirts of Heaven. The Grey Town is an immense, bleak place whose inhabitants are separated from one another by distance and dissatisfaction. Lewis uses it as a symbolic setting rather than as a conventional map of the afterlife.

The travelers encounter figures representing different attitudes, including possessiveness, self-pity, pride, and refusal to change. Their choices illustrate the book’s central argument that the rejection of joy can become a form of self-imposed imprisonment.

The work’s title alludes to William Blake’s The Marriage of Heaven and Hell and presents a reversal of that phrase. The Grey Town is sometimes misidentified as Hell itself in a literal doctrinal sense, but Lewis’s imaginative framework is more nuanced and is presented as a fictional vision.