Was Darius the city of Persepolis?

No, Darius is not the city of Persepolis; rather, Darius I was a king of the Achaemenid Empire who reigned from 522 to 486 BCE. Persepolis was one of the capital cities established during his rule and served as a ceremonial center for the empire. The construction of Persepolis began under Darius and continued under his successors, symbolizing the grandeur of the Achaemenid dynasty.