Sa’d al-Saltaneh Carvansarai in the 6.2 hectares area was built during the reign of Naser-al-Din Shah in Qajar Era in the center of Qazvin. It is one of the best Persia’s urban Carvansarais and the largest indoor inn in the world.
The builder of this complex was Sa’d al-Saltaneh Isfahani for whom the Carvansarai is named after. The Carvansarai is built on a square plan with 4 Iwans facing a courtyard.
Before the first World War, the Carvansarai was the center of trade and business in the city, but after the political changes in the Russian government,lost its connection bridge to Europe and the rest of Asia and continued its . . economic life half life. Some rooms of Caravanserai of Sa’d al-Saltaneh was running as an independent trade stands And some for storage and a part of the Caravanserai became a cereal and raisin production plant