When was Persepolis destroyed?

Persepolis, the ancient capital of Darius the Great , king of the Persians, was partly destroyed by Alexander the Great, the celebrated king of Macedonia who overthrew the Persian empire and conquered large sections of India.

The great palace of Darius was by all accounts a marvellous building and the surviving ruins are a tribute to its vast size. Situated some thirty miles northeast of Shirez in Southwest Iran, the ruins consist of retaining walls up to more than forty feet in height and a truly splendid double stair of 111 stone steps ascending to a terrace.