Which Achaemenid king began building Persepolis?

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The construction of Persepolis began under the Achaemenid king Darius I (the Great).12

Darius I founded the city in his native region of Fars to serve as a new royal residence, replacing the earlier capital at Pasargadae. While he is credited with the initial development of the site—including the fortifications, the audience hall (apadana), the council hall, the treasury, and a residential palace—these structures were not completed during his lifetime.12