Selymbria

Selymbria (Greek: Σηλυμβρία), or Selybria (Σηλυβρία), or Selybrie (Σηλυβρίη), was a town of ancient Thrace on the Propontis, 22 Roman miles east from Perinthus, and 44 Roman miles west from Constantinople, near the southern end of the wall built by Anastasius I Dicorus for the protection of his capital. Its site is located at Silivri in European Turkey.