I am traveling in Iran in this video, Tehran City road view at Azadi Square. Tehran is the capital of Iran. its population is over 9 million. Tehran is also the biggest city in Iran, and it is the cultural, economic and political center of Iran. Its major language is Persian. It is rated as one of the world’s polluted cities. Freedom Tower was built in 1971. Iran is a very safe place and very cheap to travel and live.