Tehran, the capital city of Iran and the center of the province of Tehran, located in north-central Iran at the foot of the Alborz mountain range. Since its establishment as the capital city by Agha Mohammad Khan; more than 200 years ago, Tehran has grown from a small city to a major metropolis.

It is situated in an urban region of more than 12 million inhabitants and is Iran’s largest city and one of the most populous cities of the world. Tehran is Iran’s gateway to the outside world.

The Internet is very popular among young Tehran people, who use blogs for social networking, and among political and civil society groups, who produce websites to communicate news and commentary.

Tehran is a modern, vibrant city. Its skyline is dominated by snow capped mountains and a proliferation of high rise buildings, topped by the Milad Tower; completed in the early 21st century, the tower rises 435 meters above the city.

Tehran has a hot, arid climate shared by many parts of central Iran. Although the summer is very long, the city enjoys four distinct seasons, and the Alborz mountain range prevents the humidity of the Caspian Sea in the north from reaching the city.