What is the X in X-mas?
city, northwestern (European) Turkey. It lies in the foothills of the Yildiz (Istranca) Mountains. Formerly called Kirk Kilise ("Forty Churches"), it developed chiefly because of its position on the shortest route over the mountains from the north to Istanbul, 100 miles (160 km) southeast. The city has numerous Ottoman monuments, including the 15th-century Mosque of Hizir Bey. An important trade centre (chiefly in dairy products, cereals, and tobacco), it is linked by a branch line with the Edirne-Istanbul railway.