When Nasir al-Din al-Tusi, the renowned scholar-vizier of the Mongol Holagu Khan established the observatory of Maragha, Qutb al-Din Shirazi became attracted to the city.
Kur Nasir al-Din al-Tusi, dijetar dhe vezir i njohur i Mongol Holagu Khan ngriti observatorin Maragha, Qutb al-Din Shirazi u tërhoq nga qyteti.