Persepolis, The centre of the great Persian Empire

The city was located in a remote region in the mountains, however, making travel there difficult in the rainy season of the Persian winter, so the administration of the Achaemenid Empire was also overseen from Ecbatana, Babylon, and Susa. Persepolis was a spring/summer royal residence and seems to have been intended as a ceremonial center where representatives of subject states came to pay respects to the king.