Dionysupolis

Dionysupolis or Dionysoupolis or Dionysopolis () was a town of ancient Thrace, later of Moesia, on the river Ziras. It was founded as a Thracian settlement, but was later colonised by the Ionian ancient Greeks and given the name Cruni or Krounoi (Κρουνοί). It was named Krounoi from the nearby founts of water.
It was renamed as Dionysopolis after the discovery of a statue of Dionysus in the sea. Later it became a Greek-Byzantine and Bulgarian fortress. The town also bore the name Matiopolis.
Its site is near the modern Balchik, Bulgaria.