Cyrenaica Cyrenaica Cyrenaica ( ; , , after the city of Cyrene; ) is the eastern coastal region of Libya. Also known as "Pentapolis" ("Five Cities") in antiquity, it formed part of the Roman province of Crete and Cyrenaica, later divided into "Libya Pentapolis" and "Libya Sicca". During the Islamic period, the area came to be known as "Barqa", after the city of Barca. Cyrenaica was the name of an administrative division of Italian Libya from 1927 until 1943, then under British military and civil administration from 1943 until 1951, and finally in the Kingdom of Libya from 1951 until 1963.
Ptolemais, Cyrenaica port for the city of Barca, inland, he transformed into a city that enclosed 280 hectares within its walls. Ptolemais probably served as the residence of the Ptolemaic governor of the region but, in spite of its large area, its population did not rival that of Cyrene, which under Roman rule became the capital of the region that, from then on, and still today, is called Cyrenaica. However, the term "Pentapolis" also continued to be used. Ptolemais became a Roman possession in 96 BC. It was soon included in the Roman province of Crete and Cyrenaica. With Diocletian's alteration of