In 1889, the train's eastern terminus became Varna in the Principality of Bulgaria, where passengers could take a ship to Constantinople. On 1 June 1889, the first direct train to Constantinople left Paris (Gare de l'Est). Istanbul, known as Constantinople until circa 1930 in English, remained its easternmost stop until 19 May 1977. The eastern terminus was the Sirkeci Terminal by the Golden Horn. Ferry service from piers next to the terminal would take passengers across the Bosphorus to Haydarpaşa Terminal, the terminus of the Asian lines of the Ottoman Railways.