Wikipedia: "Darius ordered the construction of the Apadana Palace and the Council Hall (the Tripylon or three-gated hall), the main imperial Treasury and its surroundings. These were completed during the reign of his son, King Xerxes the Great (New-Persian Khashayar, more correctly, khašāyāršā < OPers. xšāya-āršān, 'the greatest/king of the gallant youth/young men'). Further construction of the buildings on the terrace continued until the downfall of the Achaemenid dynasty"
Persepolis (Persian: تخت جمشید/پارسه) was the ceremonial capital of the Persian Empire during the Achaemenid dynasty. Persepolis is situated 70 km northeast of the modern city of Shiraz in the Fars Province of modern Iran. In contemporary Persian, the site is known as Takht-e Jamshid (Throne of Jamshid) and Parseh. To the ancient Persians, the city was known as Pārsa, meaning "The City of Persians". Persepolis is the Greek interpretation of the name Πέρσης πόλις (Persēs polis: "Persian city").