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.
Library of Pergamum
Pergamum was home to a library said to house approximately 200,000 volumes, according to the writings of Plutarch. Built by Eumenes II and situated at the northern end of the Acropolis, it became one of the most important libraries in the ancient world. The cultured Pergamene rulers built up the library to be second only to the Great Library at Alexandria. Flavia Melitene, who was a distinguished citizen of Pergamum and wife of a town councillor, was instrumental in supplying the library. She also presented a statue of Hadrian to the library as a gift. It is known that a certain Artemon was employed in the library during the second century B.C. though his personification is obscure. No index or catalog of the holdings at Pergamum exists today, making it impossible to know the true size or scope of this collection.