Sangachal Caravansarai, Medieval caravanserai in Sanqaçal, Azerbaijan

Sangachal Caravanserai is a stone structure with semi-cylindrical defensive features arranged around a central courtyard on the Caspian shore. The building contains separate merchant chambers and distinct spaces for livestock, organized symmetrically around the interior courtyard.

The structure was built between 1439 and 1440 under Shirvanshah Khalilullah I and served merchants traveling the trade route connecting Baku to Salyan. Its construction occurred during a period of strong commercial activity in the coastal regions.

A stone slab (kitabe) on the north-eastern facade carries an Arabic inscription naming the great sultan Halilullah and the year 843 AH (1439–40). The text records that he ordered the building of this imaret, a term used for a charitable or public structure. The same inscription was noted by travellers I. Lerkh, I. Berezin and B. Dorn.

The site is located about 45 kilometers south of Baku near the Dzheyrankechmez river and is best reached by car. Two separate water collection systems are visible, which supplied the travelers and animals passing through.

This was one of the few caravanserais along the Caspian coast equipped with its own water systems to overcome scarcity in the region. The twin water collection methods allowed merchants to travel longer routes without depending on external sources.