Iranian archaeologists have discovered a 13th century observatory at the Ismailis stronghold of Alamut. It is believed this was used by the famous scientist and astronomer Khwaja Nasiruddin al-Tusi.
Hamide Chobak, manager of the Alamut site, told the Fars News Agency, ”During our excavations in the Alamut Castle we found some windows which we realized had not been used for scouting to protect anything. These windows open to the southeast, that is the direction that stars first come into sight.”
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