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 Altar
At many places in the Gigantomachy frieze, other Greek works of art can be recognized as having served as models. For example, Apollo with his idealized stance and good looks recalls a classical statue by the sculptor Leochares, produced about 150 years before the frieze and famous already in antiquity; a Roman copy has survived and is now in the Vatican Museum (The Belvedere Apollo). The important group which includes Zeus and Athena moving in opposite directions recalls the scene showing the struggle between Athena and Poseidon on the western pediment of the Parthenon. Such allusions are not accidental since Pergamon considered itself to be something like a reborn Athens.