Tehran Province is home to over 15 million people, making up around 20% of Iran’s total population. The region is known for its diverse geography, ranging from mountainous regions in the north to agricultural plains in the south. Tehran Metropolitan area boasts of large-scale industrial infrastructures, including industrial cities within the metropolitan area. The region’s transportation system includes the largest subway system in the Middle East, which starts in the capital Tehran and expands to surrounding towns. Tehran Province is also home to several universities and research institutions, as well as a rich cultural heritage with museums, historical sites, and religious monuments. With its diverse economy and diverse geography, Tehran Province is an indispensable part of Iran and the region.