Istanbul–Ankara railway the undertaking, von Siemens formed the Ottoman Anatolian Railway (CFOA) on 4 October 1888 to build and operate the railway for 99 years. The CFOA started construction further from Izmit in May 1889 and purchased the Istanbul-Izmit railway for 6 million CHF. Istanbul–Ankara railway The Istanbul–Ankara railway () is a long electrified railway in Turkey. The line connects Turkey's largest city, Istanbul, to the capital and second largest city, Ankara; making it one the busiest railways in the country in terms of passenger and freight rail traffic. The railway runs parallel to the Ankara-Istanbul high-speed railway and in several sections,
Çankaya, Ankara (district) changed in the 1920s when Mustafa Kemal Atatürk came to stay in one of the garden houses. Atatürk selected Ankara as capital of the new republic and in the 1920s and 30s the city quickly grew, especially in the direction of Çankaya. In 1934 the writer Yakup Kadri Karaosmanoğlu described the area as ""a wooden bridge, a dirt road, and when you come round the hill you see a hillside, green in gentle contours. That's Çankaya"." Çankaya eventually developed into one of the largest central districts of Ankara in later years. The climate in Çankaya is cold and temperate. The