is the official memorial to the victims of the Armenian genocide. The city is home to several opera houses, theatres, museums, libraries, and other cultural institutions. Yerevan Opera Theatre is the main spectacle hall of the Armenian capital, the National Gallery of Armenia is the largest art museum in Armenia and shares a building with the History Museum of Armenia, and the Matenadaran repository contains one of the largest depositories of ancient books and manuscripts in the world. Etymology One theory regarding the origin of Yerevan's name is the city was named after the Armenian king, Yervand (Orontes) IV, the last ruler of Armenia from the Orontid dynasty, and founder of the city of Yervandashat. However, it is likely that the city's name is derived from the Urartian military fortress of Erebuni (Էրեբունի), which was founded on the territory of modern-day Yerevan in 782 BCE by Argishti I. "Erebuni" may derive from the Urartian word for "to take" or "to capture," meaning that the fortress's name could be interpreted as "capture," "conquest," or "victory." As elements of the Urartian language blended with that of the Armenian one, the name eventually evolved into Yerevan (Erebuni = Erevani = Erevan = Yerevan). Scholar Margarit Israelyan notes these changes when comparing inscriptions found on two cuneiform tablets at Erebuni: Early Christian Armenian chroniclers connected the origin of the city's name to the legend of Noah's Ark. After the ark had landed on Mount Ararat and the flood waters had receded, Noah, while looking in the direction of Yerevan, is said to have exclaimed "Yerevats!" ("it appeared!" in Armenian), from which originated the name Yerevan. In the late medieval and early modern periods, when Yerevan was under Turkic and later Persian rule, the city was known in Persian as Iravân (). The city was officially known as Erivan () under Russian rule during the 19th and early 20th centuries. The city was renamed back to Yerevan (Ереван) in 1936. Up until the mid-1970s the city's name was spelled Erevan more often than Yerevan in English sources. Symbols The principal symbol of Yerevan is Mount Ararat, which is visible from any area in the capital. The seal of the city is a crowned lion on a pedestal with a shield that has a depiction of Mount Ararat on the upper part and half of an Armenian eternity sign on the bottom part. The emblem is