The caravanserai audio guide application introduces the historical complex of Saad al-Saltanah in Qazvin and describes its different parts in text and audio in both Persian and English. 

The program has been implemented by DiSL Group and commissioned by Information Technology and Communication Organization of Qazvin Municipality

Programming and graphics: Mostafa Aghbalaghi Tabrizi and Ali Khaleghi 

Voice: Shaghayegh Kazemnejad and Yasman Razdar 

Research and translation: Alireza Soltaninejad and Faezeh Gholami