Chehel Sotun, Qazvin

Chehel Sotun, originally named Kolah Farangi 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 1555–56. In the Qajar era, it was repaired and remodeled by Mohammad Bagher Sa'd as-Saltaneh, the governor of Qazvin.
Today, it is one of the two remaining Safavid royal structures in the city, the other one being the Ali Qapu Gate, and it is used as a museum of calligraphy.