John of Patmos described Pergamon Altar in Revelation 2:12: “Pergamos. Where Satan’s throne is.” A brief history of Pergamon provides the following from Former Things website: “The Pergamon Altar is a massive structure originally built in the 2nd century BC in the Ancient Greek city of Pergamon. The temple was dedicated to the greek god Zeus. The Pergamon Altar was shipped out of the Ottoman Empire from the original excavation site by the German archeological team lead by Carl Humann, and reconstructed in the Pergamon Museum in Berlin…”

“The Gigantomachy Frieze… The Altar has a 113 metre (371 feet) long sculptural frieze depicting the gigantomachy, or struggle of the gods and the giants. In Greek mythology, the Gigantes were a race of giants, children of Ge (the primordial Earth mother), who was fertilized by the blood of Ouranos that resulted from his castration by Cronus…” 

“[Humann]… began excavating the altar
on Sept.9,
1878.
The altar was then moved back to Germany
and reconstructed. Kaiser Wilhelm II celebrated
its erection in
Berlin in 1902.  In 1933 Adolph Hitler was elected Chancellor of Germany. In 1934 he became dictator and ordered construction of the Tribune at Zeppelin Field in Nuremberg for his Nazi rallies.“  A brief video below observes stage of 2008 Democratic convention nominating Obama was modeled after the Pergamon Altar.