Qosṭinlār Fortification
A source-led research node for Qosṭinlār, component 1770-005 of the UNESCO World Heritage property Alamūt Castle and Related Fortifications.
Official component data
Fifth component of the serial property
UNESCO lists Qosṭinlār as one of six fortifications associated with Alamut Castle. Together, the seven components form a coordinated defensive system across the Alamut Valley. [HSKRC-SRC-0009] [HSKRC-SRC-0010]
A road-controlling fortified plateau
Strategic setting
ICOMOS records Qosṭinlār at about 1,812 metres above sea level, southwest of Alamut. Its position overlooks the route linking Qazvin and Alamut and the Šāhrud Valley, supporting strategic control and visual communication with neighbouring fortifications. [HSKRC-SRC-0012]
Defensive layout
The ICOMOS evaluation describes a rectangular plateau with a central keep, ancillary structures on the southern slope, a perimeter wall and thirteen regularly spaced towers connected by corridors. It records rubble stone, dressed stone and gypsum mortar among the construction materials. [HSKRC-SRC-0012]
Surveillance, defence and communication
Although partially destroyed, the surviving remains are interpreted in the ICOMOS evaluation as evidence of Qosṭinlār's role in surveillance, defence and control of strategic routes. At the scale of the entire serial property, UNESCO emphasises intervisibility and functional relationships among the fortifications as attributes of the network's integrity. [HSKRC-SRC-0012] [HSKRC-SRC-0010]
Part of the Nizari fortified landscape
Alamūt Castle and Related Fortifications was inscribed in 2026 under criterion (iii). UNESCO describes the ensemble as rare testimony to the Nezāri Ismaʿili cultural tradition that flourished in the Alborz Mountains from the eleventh to the thirteenth centuries, integrating defence, administration, scholarship and community life. [HSKRC-SRC-0010]
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Traceable evidence
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