One of the oldest treasuries of the Cultural Institute of Museums is a treasury called the Prospect of History Treasury due to the richness of its historical objects. In this treasury, all kinds of historical objects from different periods of Iranian history from the Achaemenid era to the contemporary times as well as objects from other countries are kept. Numerous and various works related to the history of Tehran and the Qajar period, which had been previously displayed in the Prospect of History Museum, form another part of this treasury. Valuable and unique collections of penners and lacquer works, objects made of elephant and other animals' teeth, and decorative items made of metals such as silver and bronze are among the special collections of this treasury.