Haydarpaşa station is a railway station in Istanbul, that was, until 2012 the main city terminal for trains travelling to and from the Anatolian side of Turkey. It used to be Turkey's busiest railway station. The station building still houses the headquarters for District 1 of the State Railways but since a fire in 2010 the station has not been in use and its future remains uncertain.

Sirkeci railway station, listed on maps as Istanbul railway station, is a railway terminal in Istanbul, Turkey. The terminal is located in Sirkeci, on the tip of Istanbul's historic peninsula, right next to the Golden Horn and just northwest of Gülhane Park and the Topkapı Palace. Sirkeci Terminal on the European side of the Bosporus strait, along with Haydarpaşa Terminal on the Asian side, are Istanbul's two intercity and commuter railway terminals. Built in 1890 by the Oriental Railway as the eastern terminus of the world-famous Orient Express that once operated between Paris and Istanbul in the period between 1883 and 2009, Sirkeci Terminal has become a symbol of the city. As of 19 March 2013, service to the station was indefinitely suspended due to the rehabilitation of the existing line between Kazlıçeşme and Halkalı for the new Marmaray commuter rail line. On 29 October 2013, a new underground station was opened to the public and is serviced by Marmaray trains travelling across the Bosphorus. Station reopened on 26 February 2024 as part of T6 Sirkeci–Kazlıçeşme Tramway Line / U3 Sirkeci–Kazlıçeşme Rail Line. Sirkeci Terminal has a total of 4 platforms with 7 tracks. Formerly, commuter trains to Halkalı would depart from tracks 2, 3 and 4; while regional trains to Kapıkule, Edirne and Uzunköprü, along with international trains to Bucharest, Sofia and Belgrade would depart from tracks 1 and 5.