Metropolis of Pergamon
The Metropolis of Pergamon () was an ecclesiastical territory (diocese) of the Ecumenical Patriarchate of Constantinople in western Asia Minor, modern Turkey. Christianity in the city of Pergamon (modern Bergama), was introduced already from 1st century AD, while the local Christian community comprised one of the seven Churches of Asia mentioned at the Book of Revelation, written by John of Patmos. The bishopric of Pergamon was twice promoted to a metropolis: during the 13th–14th centuries, as well as for a short period in 1922. Today the "Metropolis of Pergamon and Adramyttium" is the see of a titular metropolitan.
Gongylos
It is thought that the Greek dynasts of Pergamon were punished following the Peace of Antalcidas in 386 BCE for their support of the Greeks against the Achaemenids. However, by the mid-4th century BCE, the Achaemenid satrap Orontes again allowed the people of Pergamon to settle on the acropolis of their city. This lasted until the conquests of Alexander the Great, when Pergamon became part of the Macedonian Empire.