Erzurum is a city in eastern Turkey. It is the largest city in, and the capital of, Erzurum Province. It is situated 1757 meters above sea level. Erzurum had a population of 361,235 in the 2000 census, increasing to 367,250 by 2010. Erzurum, known as "The Rock" in NATO code, served as NATO's southeastern-most air force post during the Cold War. The city uses the double-headed Anatolian Seljuk Eagle as its coat-of-arms, a motif that was a common symbol throughout Anatolia and the Balkans in the medieval period. Erzurum has some of the finest winter sports facilities in Turkey and hosted the 2011 Winter Universiade.