The original nucleus of the fortress, designed in Byzantine times, is believed to have been built on top of the ancient
acropolis. According to an old text found in the language Aeolic of Lesbos. Mytilene was spelled in many different styles two such examples were Mytileanaean and as referenced by
Aristotle Maloeis, which was a harbor in Lesbos. According to the same text a Temple of
Apollo existed in Maloeis as we learn from
Thucydides. Temples usually were erected at the
Acropolis. A Temple of Apollo may have existed within the Castle infrastructure. Another Case was made by Susan-Marie Cronkite in her Doctoral thesis that a Sanctuary of
Demeter may have rested at the Acropolis throughout Mytilene's history. The city flourished and was in League with the King of Macedon, Lesbos joined a revolt against Rome in the
Mithridatic Wars and in 88 BC the Romans destroyed Mytilene and the Temple of Mytilene assumed Apollo's Temple. They extended domination over the whole island.
Pompey later gave Mytilene autonomy, which Emperor
Vespasian revoked in 70 AD but Emperor
Hadrian Later restored.
Theophanes of Mytilene lived in the 1st century, he was a historian and intellectual who was friends with
Pompey according to
Plutarch he granted freedoms to
Mytilene for Theophanes sake. According to excavations both in the Castle of Mytilene and elsewhere in the town archeologists have uncovered a variety bronze coins Commemorating Theophanes portrait. The first significant alterations to the fortress were made by
Francesco I Gattilusio in 1373. The castle was
bombarded and captured by the Ottomans in 1462. In 1501, Sultan
Bayezid II repaired the damage suffered by the Castle during the
Ottoman–Venetian War (1499–1503), and built two large round towers with cannon and developed new walls. New construction to modernize the castle was undertaken in 1643-1644 by Bekir Pasha, in the days of
Sultan Ibrahim Khan, perhaps in view of the
Cretan War (1645–69) or because of destruction by earthquake. They carried out repairs to the walls, erecting a new wall in front of the existing medieval wall. In front of these new structures a deep wide moat was created. Other changes and additions followed, the most important of which was made in 1677 by the Ottomans. The lower north sections of the fortifications were added. The
Ancient Theatre of Mytilene was used for construction materials. In 1756 Admiral Kuramadji added a polygonal tower near the harbor of Epano Skala. During the 19th century the function and character of the castle changed. The castle exhibited a more military character, as indicated by the barracks built near the
madrasa and the neighboring gunpowder vault. Its walls, however, were not thick or strong enough to withstand attack by cannons, especially from the seaward side. The island was captured by Greece during the
First Balkan War, on November 8, 1912. After 1912 the castle was used as a source of building material to construct refugee housing which gradually brought about its ruin. The intramural segment continued to be inhabited until shortly after the
Second World War. The castle is currently used for local festivals in the summer and tourist tours it is declared a historical site. ==Architecture==