Tehran, sometimes spelled Teheran, is the capital of Iran and Tehran Province. With a population of 12,223,598 it is also Iran's largest urban area and city, the largest city in Western Asia and the 5th-largest city globally. In the 20th and 21st centuries, Tehran has been the subject to mass migration of people from all around Iran. The city is home to many historic mosques, churches, synagogues and Zoroastrian fire temples. Contemporary Tehran is a modern city featuring many structures, of which the Azadi (Freedom) Tower and the Milad Tower have come to be symbols of Tehran itself. Tehran is 29th by the population of its metropolitan area. Throughout Iran's history, the capital has been moved many times, and Tehran is the 32nd national capital of Iran. Persian is the city's native tongue, spoken by roughly 98% of the population. The majority of people in Tehran identify themselves as Persians.
Contributions by Zereshk, Roozbeh, and Mani1.