The capital of Iran. With more than 8.6 million people residing within city limits, it is by far the most populous city in Iran; the second largest, Mashhad, has 3 million people. It is also the second most populous city proper (after Istanbul) and metropolitan area (after Cairo) in The Middle East. Tehran is actually the 32nd capital of Iran, being chosen as the capital in 1796 by Agha Mohammad Khan of the Qajar dynasty due to its proximity to The Caucasus and distance from the vying factions of the previously ruling Iranian dynasties.
During the pre-Islamic era, the area that would become Tehran was a hamlet on the outskirts of Rey (ancient name Rhages), a city some 20 km southeast that is now part of Tehran's metropolitan area. Rey had been an important city since the time of the Medes. Tehran remained an unimportant village for several centuries following the Arab conquest and only started to grow in prominence after the Mongol invasion. The Khwarezmians, who controlled the Iranian plateau, bore the brunt of Mongol devastation because it dared to defy Genghis Khan. Many of its cities, including Rey, were razed and following that the survivors of Rey's sacking fled to Tehran. During the early modern period, Tehran was a walled city and its population grew slowly; in the 1500s, it numbered less than 1,000 people, rising to some 15,000 around the time of its designation as the country's capital.
Much of the city was demolished, rebuilt and modernized under the rule of Reza Shah in the 1920s, and has since then become a flourishing metropolis and destination for mass migrations from all over Iran, with the city being listed under the top 10 fastest growing travel destinations in 2016. The city is home to the largest shopping mall in the world, the Iran Mall, which, while still partially under construction, had its first phase opened to the public in 2018, the largest stadium in Western Asia in the Azadi Stadium, and the sixth-largest tower in the world in the Milad Tower, in addition to various other historic and unique landmarks like the Azadi Tower and Golestan Palace, the latter of which is a UNESCO World Heritage Site.
Unfortunately, the city suffers heavily from pollution, being rated as one of the most polluted cities in the world. The majority of the pollution is air pollution from cars. Originally, Tehran was suppose to have a capacity of only 300,000 cars, but the number has far surpassed that, with more than five million cars now occupying the roads and more than 200,000 taxis roaming around daily. To help with the heavy flow of traffic throughout the city, a large series of expressways has been built around it. Another major issue is earthquakes, due to the city being located near two major fault lines. Because of these issues, there have been plans to relocate the capital to a different city, though no definitive plans have been approved yet.
- Abbas Kiarostami
- Mahmoud Ahmadinejad, the President of Iran from 2005 to 2013, was born in Semnan Province but raised in Tehran. His original surname was "Saborjhian", which means thread painter, a common occupation in Semnan's carpet-making industry.note
- Nasim Pedrad. Born in Tehran but moved to the United States when she was two.
- Shohreh Aghdashloo
Tehran in fiction:
- Most Iranian domestic films and television series are set in Tehran and its surroundings, as it is the country's premier entertainment center.
- Argo deals with the 1979 American embassy hostage crisis during the Iranian Revolution.
- Battlefield 3 has 3 of its missions set in Tehran, those being Operation Guillotine, Fear No Evil and Night Shift.
- Persepolis: Persepolis 1 and the second half of Persepolis 2 are set here. The comic is autobiographical; the author, Marjane Satrapi, was raised in Tehran and wrote based on her experiences living in post-revolutionary Iran.
- Splinter Cell: Blacklist has a mission set in the Quds Force HQ here, where Sam is tasked to gather data on the Blacklist from their servers and prove Iran is innocent in order to prevent a war between them and the US over false evidence Sadiq planted in London.