Caravanserais are building and palace built as guest houses on trade routes. Caravans are kept at those buildings built by merchants, people gets relaxed and continue on their way. During the Middle Ages, the buildings built to protect the milit
ary and borders, and later buildings with trade purposes became used as caravanserais. In ancient times a large part of the trade routes crossed Azerbaijan, so it was necessary to construct caravanserais here. Gulustan Caravanserai is located in Julfa region, on the left bank of the river of Gulustan village. In 1974, the ruins of Gulustan caravanserai were found during the field survey, in 1978, the building plan was fully revealed. While building Baku-Julfa railway line (1939-1940) about half of the caravanserai was destroyed. At the result of studies, the Gulustan Caravanserai has been identified as the most famous and magnificent monuments among road caravanserais of Azerbaijan. The same type of Gulustan caravanserai with total length of 37 m. was saved entirely on the right bank of the river. The location of the two caravanserais on the banks of the river face to face shows that before the bridge over the river was built, the river ferry operated here and the period of construction of caravanserais relates to beginning of the 13th century. Caravanserais were built of river stones and plastered with mud along. In the revealed part of the Gulustan caravanserai many living rooms were found.