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.
Pergamon
The sanctuary was entered through a Propylon from the east, which led to a courtyard surrounded by stoas on three sides. In the centre of the western half of this courtyard, stood the Ionic temple of Demeter, a straightforward Antae temple, measuring 6.45 x 12.7 metres, with a porch in the Corinthian order which was added in the time of Antoninus Pius. The rest of the structure was of Hellenistic date, built in local marble and had a marble frieze decorated with bucrania. About 9.5 metres in front of the east-facing building, there was an altar, which was 7 metres long and 2.3 metres wide. The temple and the altar were built for Demeter by Philetaerus, his brother Eumenes, and their mother Boa.