Tachara palace, Persepolis, Iran. The Tachara, or the Tachar Château, also referred to as the Palace of Darius the Great, was the exclusive building of Darius I at Persepolis, Iran. It is located 70 km northeast of the modern city of Shiraz in Fars Province. Tachar Persepolis Iran by درفش کاویانی is licensed under CC BY-SA 3.0