Road to the Multiverse - S8-E1
Corrected entry: When Brian and Stewie are in the universe without religion, Brian asks what happened to the art of the Renaissance and they go to the Sistine Chapel to see that John Hinkley decorated the ceiling. Why is there a Sistine Chapel in a world with no religion?
Correction: It's not a world with no religion whatsoever; Stewie simply described it as a world without Christianity. The Sistine Chapel could still exist, but not necessarily as a building with any religious significance, or possibly representing a different faith.
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