By Aaron Wolf.
Tehran is the capital and most populous city in the Islamic Republic of Iran. The settlement of Tehran’s immediate area dates back well into ancient times. In the Classical era, Rhages, which eventually became Tehran’s 20th municipal district, was a key city in the Median Dynasty. In more recent centuries, Tehran was chosen as the capital of Persia in 1786 during the Qajar dynasty. The city is located in north-central Iran at the foothills of the Elborz mountain range, 697 kilometers from the Caspian Sea, with a semi-arid climate.