Chalcedon
The site of Chalcedon is located on a small peninsula on the north coast of the Sea of Marmara, near the mouth of the Bosphorus. A stream, called the Chalcis or Chalcedon in antiquity and now known as the Kurbağalıdere (Turkish: "stream with frogs"), flows into Fenerbahçe bay. There Greek colonists from Megara in Attica founded the settlement of Chalcedon in 685 BC, some seventeen years before Byzantium.
Calydon
According to Greek mythology, Calydon was founded by Aetolus in the land of the Curetes, and was called Calydon, after the name of his son, Calydon. Calydon and the neighbouring town of Pleuron are said by Strabo to have been once the "ornament" of Greece, but by his time (late 1st century BC) had sunk into insignificance. It is frequently mentioned in the "Iliad" by Homer, who celebrates the fertility of the plain of "lovely" Calydon. In the earliest times the inhabitants of Calydon appear to have been engaged in incessant hostilities with the Curetes, who continued to reside in their ancient capital Pleuron, and who endeavoured to expel the invaders from their country. A vivid account of one of the battles between the Curetes and Calydonians is given in an episode of the "Iliad."