Which modern day Libyan city has its origins in the times of Ancient Greece that helped form the Pentapolis of Cyrenaica along with the cities of Ptolemais, Tauchira, Apollonia and Euesperides?
Ptolemais, Cyrenaica Ptolemais (Greek: Πτολεμαΐς) was one of the five cities that formed the Pentapolis of Cyrenaica, the others being Cyrene, Euesperides (later Berenice, and now Benghazi), Tauchira/Teuchira (later Arsinoe, and now Tocra), and Apollonia (now Susa).
Astacus in Bithynia Astacus (Greek Ἀστακός Βιθυνίας ) is the name of an ancient city in Bithynia; it was also called Olbia . Stephanus of Byzantium records an aetiological myth that it was founded by Astacus, son of Poseidon and the nymph Olbia. The city was founded in the Second Greek colonisation by the Megarans together with the Athenians.