Pergamon
Pergamon's other notable structure is the great temple of the Egyptian gods Isis and/or Serapis, known today as the "Red Basilica" (or "Kızıl Avlu" in Turkish), about south of the Acropolis at (39 7' 19" N, 27 11' 1" E). It consists of a main building and two round towers within an enormous "temenos" or sacred area. The temple towers flanking the main building had courtyards with pools used for ablutions at each end, flanked by stoas on three sides. The forecourt of the Temple of Isis/Sarapis is still supported by the Pergamon Bridge, the largest bridge substruction of antiquity.
Pergamon
According to Christian tradition, in the year 92 Saint Antipas, the first bishop of Pergamum ordained by John the Apostle, was a victim of an early clash between Serapis worshippers and Christians. An angry mob is said to have burned Saint Antipas alive in front of the Temple inside a brazen bull-like incense burner, which represented the bull god Apis. His martyrdom is one of the first recorded in Christian history, highlighted by the Christian Scripture itself through the message sent to the Pergamon Church in the Book of Revelation.