Tehran City, with a relatively short history, holds interesting monuments and worth-seeing places. Tehran, once was a village in suburbs of the city of Ray, after ruining by The Mongols, developed gradually and was selected as capital city of Iran in the reign of Agha Mohammed Khan Ghajar in the rate 18th century AD. Most of historical buildings in Tehran are constructed in Ghajar time. The most important worth seeing places of Tehran are:
- Museum of Royal Jewels in National (Melli) Bank which the famous diamond Daryayeh Noor (the sea of light) along with jewels and crowns of Iranian kings are kept there.
- Bazaar of Tehran as the largest commercial center of the country with several caravansaries, old buildings, Imam mosque, Motahari (Sepahsalar) mosque-school.
- Golestan Palace with its internal and external quarters aggregates.
- Shrine of His Holiness Abdol-Azim in Shahr Ray.
- Museums of Iran Bastan (archeology), carpet, Reza Abbasi (art), Abgineh, decorative arts, palaces of Niavaran, Saad-Abad and Golestan which hold a treasury of invaluable art works.
Today, the face of Tehran City, as the largest metropolitan area of the country, with its physical expansion and diversity of roles, is completely changed. The most important centers of higher education, administration, military, politicy, economy, communication, and commerce are in Tehran. The summer countryside around Tehran, especially those around Lar, Karaj, and Latian dams with the valley of Jajrood and Karaj as well as winter amusement places of Dizin, Shamshak and Ab-Ali, suitable for winter sports, compose recreational areas of Tehran. The accommodation facilities of Tehran, with different classifications respond to all needs of tourists with different tastes.