Trabzon is one of such rare cities both in Turkey and in the world. The history of the city, which was first founded on top of a height between Zaganos and Tabakhane valleys, can easily be seen in its walls – first built by the founders of the city and later extended by the Romans, Byzantines and Ottomans by new annexes and restorations – monasteries, mosques, bridges and tombs.Erzurum is a city in eastern Turkey. It is the largest city and the eponymous capital of Erzurum Province. The city is situated 1757 meters (5766 feet) 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 based on the double-headed Byzantine Eagle 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.Kars in the northeastern corner of the country, over a high plateau. The province, famous in Turkish history, lies at the foot of a magnificent fortress, the Kars Kalesi from the 12thcentury. This castle constructed by the Seljuks, was later restored in the 19th- century, and it affords a wonderful view of the land below. Nearby is an old cathedral which was subsequently used as a church, named as the Havariler Museum (the Church of the Apostles) where some relief of the Apostles can be seen.Gaziantep is the city in southeastern Anatolia and it is the sixth largest city in Turkey. Its population, economical situation, tourism potential, and Greater Municipality make the city metropolitan. It connects Southeast Anatolia to the West with highways and railways at it is the center of them and as its airport has become international, the flow of goods, services and visitors has increased. 1/4 of its land area consists of fertile areas, and some part of which have been irrigated by the Euphrates River. In these area of Gaziantep industries whose economical value is very high include pistachio nuts, olives, cooton, grapes, red peppers, flax, lentils, and cereal grains like wheat and barley.Gaziantep is the gateway of GAP geograpically, and with its industry, the trade volume has helped to develop GAP. Economically it effects 18 other cities.Gaziantep is one of the oldest centers that reflects the culture of human societies. Its history goes back to 4000 B. C.Gaziantep is a war-veteran cith in which you can relive the past and the present through its historical, touristic and natural beauties, memories of the Independence War and Antep Defence, high plateaus, plains, ruins delicious meals, unique handicrafts, mosques, tombs, Muslim Theological Schools, Antep Houses, Turkish Baths, and Caravansaray.