. . "Maragheh observatory (Persian: \u0631\u0635\u062F\u062E\u0627\u0646\u0647\u0654 \u0645\u0631\u0627\u063A\u0647\u200E\u200E), was an institutionalized astronomical observatory which was established in 1259 CE under the patronage of the Ilkhanid Hulagu and the directorship of Nasir al-Din al-Tusi, a Persian scientist and astronomer."@en . .