Ionic Great Altar of Zeus and Athena at Pergamon From Middle Hellenistic period (182-165 B.C. for exterior, and 164-159 B.C. for interior frieze); a baroque monument designed by Menekrates of Rhodes.

Revelations from the Bible:
2:12 And to the angel of the church in Pergamos write; These things saith he which hath the sharp sword with two edges; 2:13 I know thy works, and where thou dwellest, even where Satan's seat is: and thou holdest fast my name, and hast not denied my faith, even in those days wherein Antipas was my faithful martyr, who was slain among you, where Satan dwelleth.

Note from David M. Scholer: "According to Adela Yarbro Collins 'Satan's throne' in Pergamum most likely refers to the Great Altar which served both the sanctuaries of Athena and of Zeus... Her discussion is found in her article 'Pergamon in Early Christian Literature' in the book edited by Helmet Koester entitled, Pergamon: Citadel of the Gods.... (Harvard Theological Studies 46; Harrisburg, PA: Trinity Press International, 1998), 163-84."