Pergamon Bridge
The Pergamon Bridge is a Roman substruction bridge over the Selinus river (modern "Bergama Çayı") in the ancient city of Pergamon (today Bergama), modern-day Turkey. The wide structure, the largest of its kind in antiquity, was designed during Hadrian's reign (AD 117–138) in order to form a passageway underneath a large court in front of the monumental "Red Basilica" temple complex. The two intact tubes, which consist of supporting walls covered with barrel vaults, still serve their purpose to this day.
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.