Lüleburgaz, Bergoule or Arcadiopolis is the largest city of Kırklareli Province in the Marmara region of Turkey. It is the seat of Lüleburgaz District. Its population is 125,404. Located near the border with Bulgaria and Greece within the historic region of East Thrace in Rumelia, the city is home to many Balkan Turks from Albania, Bulgaria, Greece, Romania and ex-Yugoslavia who immigrated to Turkey since the 19th century.