Iran is an Islamic republic in the Persian (Arab) Gulf region with historical monuments of the Persian Empire. One of them - the ruins of the ancient city of Persepolis, the capital of the empire, founded in the VI century BC. e. Darii I. In the current capital of the country Tehran is a luxurious palace Golestan, the residence of the Qajar dynasty from 1794 to 1925, as well as such modern buildings as the Borj-e Milad with a height of 435 meters. The population of Iran is about 80 million people.