Tehran is the capital city of Iran, located in the northern part of the country. It is the largest city in Iran and serves as its political, economic, and cultural center. With a population of over 8 million people, Tehran is known for its diverse neighborhoods, modern architecture, and historical sites. The city is surrounded by the Alborz Mountains, providing a scenic backdrop and opportunities for outdoor activities like skiing. Tehran is also home to several important institutions, including the Iranian Parliament and numerous museums, such as the National Museum of Iran, which showcases the country's rich history and heritage.