Teheran, is the capital of Iran and Tehran Province. With a population of 12,223,598 it is Iran's largest urban area and city, one of the largest cities in Western Asia.
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 although it has been Iran's capital for about 220 years. Persian is the city's native tongue, spoken by roughly 98% of the population. The majority of people in Tehran identify themselves as Persians. In pre-Islamic and early Islamic times, Tehran was called Ray (which in the Avesta occurs in the form of Ragha