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,
Ankara Diocletian (284–305), seems to have engaged in a substantial programme of rebuilding and of road construction from Ankara westwards to Germe and Dorylaeum (now Eskişehir). In its heyday, Roman Ankara was a large market and trading center but it also functioned as a major administrative capital, where a high official ruled from the city's Praetorium, a large administrative palace or office. During the 3rd century, life in Ancyra, as in other Anatolian towns, seems to have become somewhat militarized in response to the invasions and instability of the town. The city is well known during the 4th century as a