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 World Atlas
The atlas contains 380 pages of maps, figures and tables along with an index of 150,000 entries. Each geographic map is accompanied by a selection of thematic maps and city maps. The "Pergamon" added extra maps of the United Kingdom and Canada.