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.
Pergamon
The most famous structure from the city is the monumental altar, which was probably dedicated to Zeus and Athena. The foundations are still located in the Upper city, but the remains of the Pergamon frieze, which originally decorated it, are displayed in the Pergamon museum in Berlin, where the parts of the frieze taken to Germany have been installed in a partial reconstruction.