In Assassin's Creed Odyssey, Knossos is the ancient Greek city associated with the legendary battle against the Minotaur.
The game places the Minotaur quest on Crete, near the ruins of Knossos. The location draws on the ancient Greek myth of Theseus, Ariadne, and the Minotaur imprisoned in the Labyrinth. Odyssey turns that legend into an explorable quest that also plays with the series' recurring interest in the boundary between myth, history, and advanced precursor technology.
Knossos was a major archaeological site on Crete and is commonly associated with the Minoan civilization. The historical palace complex is much older than the fifth-century BCE setting of Odyssey, but its ruins and later cultural reputation made it a natural setting for the Minotaur story.
Athens and Sparta are major political powers in Odyssey, while Delphi is famous for the sanctuary and oracle of Apollo. None of those cities is the specific setting linked to the Minotaur quest. The game's mythological creatures are presented within its larger narrative rather than as ordinary historical events.