Mesembria founded
600 BCE.
Shown on the map at 42.660°, 27.718°.
Mesembria (Ancient Greek: Μεσημβρία; Doric Greek: Μεσαμβρία, romanized: Mesambria) was an important Greek city in ancient Thrace. It was situated on the coast of the Euxine and at the foot of Mount Haemus; consequently upon the confines of Moesia, in which it is placed by Ptolemy. Strabo relates that it was a colony of Dorians from Megara, and that it was originally called Menebria (Μενεβρία) after its founder Menas; Stephanus of Byzantium says that its original name was Melsembria (Μελσημβρία), from its founder Melsas; and both writers state that the termination -bria was the Thracian word for town. According to the Anonymous Periplus of the Euxine Sea, Mesembria was founded by Chalcedonians at the time of the expedition of Darius I against Scythia; but according to Herodotus it was founded a little later, after the suppression of the Ionic Revolt, by fugitives from Byzantium and Chalcedon.
Text from the Wikipedia article Mesembria, licensed CC BY-SA 4.0.