Chehel Sotun (Persian: چهلستون, lit. 'Forty columns'), originally named Kolah Farangi Mansion (Persian: عمارت کلاه فرنگی, lit. 'European hat mansion') is a Safavid era royal pavilion located in Qazvin, Iran.

Its construction is attributed to Tahmasp I, who transferred the capital of Iran from Tabriz to Qazvin in 1548, and was repaired and remodeled during Qajar era.

Today, it is one of the two remaining Safavid royal structures remaining in the city, the other one being the Ali Qapu gate, and is used as a museum of calligraphy.

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  The building prior to repairs.

• Parhizkari, Mehrzad; Negahban, Farzin. "Chihil Sutūn (Qazwīn)". In Madelung, Wilferd; Daftary, Farhad (eds.). Encyclopaedia Islamica Online. Brill Online. ISSN 1875-9831.

Media related to Chehel Sotun (Qazvin) at Wikimedia Commons

• Chehel Sotoun Qazvin at irantourismcenter.com

36°16′06″N 50°00′18″E / 36.26833°N 50.00500°E / 36.26833; 50.00500