PHILADELPHIA (the modern Allahsher), an ancient city in the east of Lydia, owed its origin and its name to Attalus Philadelphus, King of Pergamus. It was situated between the southern bank of the river Cogamus and the north-western side of Mount Tmolus. The city makes no small figure in history. Strabo narrates that it was famous for being frequently shaken by earthquakes. In the Apocalypse it is mentioned as one of the "seven churches of Asia." It was also notable in more modern times for holding out against the Turks till 1390, after all the other cities of Asia Minor had surrendered. The only remarkable remains of the ancient Philadelphia are the ruins of a church.