Which king completed major construction at Persepolis after Darius I died?

Following the death of Darius I, his son and successor, Xerxes I, continued the ambitious construction program at Persepolis.

Xerxes I completed the enameled-brick facing on the exterior of the apadana (audience hall) and finished the palace begun by his father. Additionally, he erected several new monuments, including his own palace and a building often identified by archaeologists as the harem. He also initiated construction on the Hall of a Hundred Columns, though he was only able to complete the paving and the base of the walls before his death. The decoration and completion of this massive hall were subsequently carried out by Artaxerxes I.12