Relief showing the lower part of a man wrapped in a fish cloak (right) representing Oannes and a man with bull's feet. Located in Pasargadae World Heritage Site, Iran (546–529 BC). Pasargadae was the first capital of the Achaemenid Empire, the capital of Cyrus the Great (600-530 BC) and also his last resting place. At the height of its power, the Achaemenid Empire encompassed spanned three continents, as far west as Libya to nearly all Middle East, and to Central Asia.