What is "mesembria"

Mesembria or Messembria or Mesambria may refer to:

• Mesembria, modern Nesebar, an ancient Greek city in Thrace, on the Black Sea coast of Bulgaria
• Mesembria (Zone), the ancient Greek polis of Zone, on the Aegean coast of Western Thrace, Greece, whose archaeological remains were formerly identified as "Mesembria"
• Mesambrie, another ancient Greek settlement on the Aegean coast of Western Thrace (exact location unknown)
• Mesimvria, Evros, a modern Greek village near Mesembria–Zone.