Pergamon was famous for its Asclepion. An Asclepion was a "hospital" where you were able to be healed by the god Asclepius (sometimes called Aesculapius). The layout and amenities of the Asclepion are similar to a modern day health spa.
The video is mostly dark (sorry the lighting is poor in the tunnel) but you can hear the noise created by the stream of water running beneath the pavement stones in the tunnel leading you to your treatment room to be healed by the god Asclepius.
Pergamon is also famous for the altar to Zeus (now located in the Pergamon Museum in Berlin, Germany). The base of the altar is pictured below.
"I know where you live - where Satan has his throne" Rev. 2:13