Reference
OpenAI's Answer
The series "City of the Saved" initially introduces a highly distinctive setting: a vast metropolis where every human who ever lived has been resurrected. This city exists at the end of time and is designed as a utopia where everyone is immortal. The concept was first introduced in "The Book of the War" and serves as a setting for various stories published by Obverse Books (source).
For visuals and additional details on "City of the Saved," you can visit the Tardis Fandom page.
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