The sprawling capital of Persepolis and the site of the epic battle of Sparta at Thermopylae hold new discoveries waiting to be revealed; experts using cutting-edge forensic archaeology to reveal secrets behind these lost cities of ancient Persia. This is a mashup of S09E01 "Lost City Of Persia" (Persepolis) and S05E06 "Finding Sparta's 300" (Thermopylae).