Cyrene, Libya in the context of "Celaeno"

During the Iron Age and Classical antiquity, Libya (from Greek Λιβύη: Libyē, which came from Berber: Libu) referred to the area of North Africa directly west of the Nile river (Modern day Libya, Tunisia, Algeria and Morocco), not to be confused with the modern country of Libya, which only represents the eastern part of the territory at the time. Ancient Libya was one of the three parts of the world of the ancients (Libya, Asia, Europa). The territory also had part of the Mediterranean Sea named after it called the Libyan Sea or Mare Libycum which was the part of the Mediterranean south of Crete, between Cyrene and Alexandria.

Greek and Roman geographers placed the dividing line between Libya and Asia at the Nile because the entire region south of the Mediterranean and west of the Nile was homogeneous linguistically, and the Berber language was used all across North Africa as far as the Atlantic coast as well as racially by the Libyan people (Berbers) The area was divided during Roman times into four main regions: Mauretania, Numidia, Africa Preconsularis and Libya which retained the original name. In contrast, the areas of Sub-Saharan Africa were known as Aethiopia. Much later was the name Africa extended to the whole continent instead of just the Roman Province of Africa.

Doric or Dorian (Ancient Greek: Δωρισμός, romanized: Dōrismós), also known as West Greek, was a group of Ancient Greek dialects; its varieties are divided into the Doric proper and Northwest Doric subgroups. Doric was spoken in a vast area, including northern Greece (Acarnania, Aetolia, Epirus, western and eastern Locris, Phocis, Doris, and possibly Lower Macedonia and Upper Macedonia), most of the Peloponnese (Achaea, Elis, Messenia, Laconia, Argolid, Aegina, Corinthia, and Megara), the Southern Aegean (Kythira, Milos, Thera, Crete, Karpathos, and Rhodes), as well as the colonies of some of those regions in Cyrene, Magna Graecia, the Black Sea, the Ionian Sea and the Adriatic Sea. It was also spoken in the Greek sanctuaries of Dodona, Delphi, and Olympia, as well as at the four Panhellenic festivals; the Isthmian, Nemean, Pythian, and Olympic Games.

By Hellenistic times, under the Achaean League, an Achaean Doric koine appeared, exhibiting many peculiarities common to all Doric dialects, which delayed the spread of the Attic-based Koine Greek to the Peloponnese until the 2nd century BC. The only living descendant of Doric is the Tsakonian language which is still spoken in Greece today; though critically endangered, with only a few hundred – mostly elderly – fluent speakers left.

Cyrenaica (/ˌsaɪrəˈneɪ.ɪkəˌˌsɪr-/ SY-rə-NAY-ik-ə-,-SIRR-ə) or Kyrenaika (Arabic: برقة, romanized: Barqah, Koine Greek: Κυρηναϊκή [ἐπαρχία], romanized: Kūrēnaïkḗ [eparkhíā], after the city of Cyrene), is the eastern region of Libya. Cyrenaica includes all of the eastern part of Libya between the 16th and 25th meridians east, including the Kufra District. The coastal region, also known as Pentapolis ("Five Cities") in antiquity, was 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 became an Italian colony in 1911. After the 1934 formation of Italian Libya, the Cyrenaica province was designated as one of the three primary provinces of the country. During World War II, it fell under British military and civil administration from 1943 until 1951, and finally in the Kingdom of Libya from 1951 until 1963. The region that used to be Cyrenaica officially until 1963 has formed several shabiyat, the administrative divisions of Libya, since 1995. The 2011 Libyan Civil War started in Cyrenaica, which came largely under the control of the National Transitional Council (headquartered in Benghazi) for most of the war. In 2012, a body known as the Cyrenaica Transitional Council unilaterally declared Cyrenaica to be an autonomous region of Libya.

Synesius of Cyrene (/sɪˈniːsiəs/; Greek: Συνέσιος; c. 373 – c. 414) was a Greek bishop of Ptolemais in ancient Libya, a part of the Western Pentapolis of Cyrenaica after 410. He was born of wealthy parents at Balagrae (now Bayda, Libya) near Cyrene between 370 and 375.

Ptolemais (Greek: Πτολεμαΐς) was one of the five cities that formed the Pentapolis of Cyrenaica, the others being Cyrene, Euesperides (later known as Berenice, now Benghazi), Tauchira/Teuchira (later Arsinoe, and now Tocra), and Apollonia (now Susa).

Its ruins are at a small village in modern Libya called Tolmeita (Arabic طلميتة), after the ancient name.

The Church of Antioch (Arabic: كنيسة أنطاكية, romanized: kánīsa ʾanṭākiya, pronounced [ka.niː.sa ʔan.tˤaː.ki.ja]; Turkish: Antakya Kilisesi) was the first of the five major churches of what later became the pentarchy in Christianity, with its primary seat in the ancient Greek city of Antioch (present-day Antakya, Turkey).

The earliest record of the church of Antioch is given in Acts 11, stating that some "men of Cyprus and Cyrene, which, when they had come to Antioch, spoke to the Grecians, preaching the Lord Jesus [...] and a great number believed, and turned to the Lord." Later, at the start of their missionary journeys, Paul the Apostle (also called Saul) and Barnabas preached in Antioch for a year, and followers of the church were called "Christians" for the first time.

The ancient Greeks had numerous water deities. The philosopher Plato once remarked that the Greek people were like frogs sitting around a pond—their many cities hugging close to the Mediterranean coastline from the Hellenic homeland to Asia Minor, Libya, Sicily, and southern Italy. Thus, they venerated a rich variety of water divinities. The range of Greek water deities of the classical era range from primordial powers and an Olympian on the one hand, to heroized mortals, chthonic nymphs, trickster-figures, and monsters on the other.