The Sa’d al-Saltaneh Caravanserai is located just north of the Qazvin bazaar on Imam Khomeini Street. This large complex consists of: four commercial courtyards, three administrative complexes, two rows of merchant stalls alongside a magnificent domed hall, one small bazaar, and two bathhouses - all in an area of 16,700 square metres. There is an entrance from Imam Street into the main courtyard of the caravanserai. The condition of this entrance shows how the main entrance hall was lost when the street was widened. There are commercial stalls surround the main courtyard. In the centre, there is a small pool that was likely filled via auxiliary aqueducts. A smaller yard with pillars sits west of the main courtyard, and has several stalls and sleeping areas that were used to store merchandise.