The gaze of history on old Tehran

Tehrān, also spelled Teheran, the capital city of Iran and the centre of the province (ostān) of Tehrān, located in north-central Iran at the foot of the Elburz mountain range. Since its establishment as the capital city by Āghā Moḥammad Khān more than 200 years ago, Tehrān has grown from a small city to a major metropolis: situated in an urban region of 14 million inhabitants, Tehrān is Iran’s largest city and one of the most populous cities of the world.