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.
Library of Pergamum
Under the rule of Eumenes II (197-160) Pergamum was a wealthy, developing city with a population of over 200,000 people. Culturally it was rivaled only by the cities of Alexandria and Antioch. Many important works of sculpture and architecture were produced at this time, including the Great Altar of Pergamon. Upon the death of Attalus III, son of Eumenes II, in 133 BC, Pergamum was bequeathed to the Roman Republic. After the fall of Constantinople, Pergamum became part of the Ottoman Empire.