Pergamon
Pergamon ( or ), Pergamos or Pergamum () ( or ), was a rich and powerful ancient Greek city in Aeolis. It is located from the modern coastline of the Aegean Sea on a promontory on the north side of the river Caicus (modern-day Bakırçay) and northwest of the modern city of Bergama.
Pergamon Bridge
For urban development, such substructions are regarded as particularly useful for providing large open spaces in densely populated inner city areas. This was also the case in Pergamon, as the building of the Serapis Temple required the bridging of an entire section of the River Selinus in order to create sufficient space for a large platform in front of the temple.