کاروانسرای سنگی محمدآباد

This caravanserai is located beside the Geli Fortress, near the village of Mohammadabad Kaj and the Qom–Garmsar road. Its construction dates back to the Seljuk era (the first half of the 6th century AH), and it was registered as a national heritage site in 1998. The structure follows a four-iwan plan, surrounded by massive stone fortifications and eight watchtowers. It is built mainly from rough mountain stone, with brick and plastered domed vaults, while only the main entrance features prominent brickwork. The caravanserai includes separate areas for human rest and livestock storage, as well as a water reservoir and a covered hall (shabestan).