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.
Hierapolis
Hierapolis was first excavated by the German archaeologist Carl Humann during June and July 1887. His excavation notes were published in his 1889 book "Altertümer von Hierapolis". His excavations were rather general and included a number of drilling holes. He would gain fame for his later discovery of the Pergamon Altar, which was reconstructed in the Pergamon Museum in Berlin.