St. Philippe Marytyrion (Ottogon, Pamukkale): It was constructed in the name of one of the 12 apostles of Jesus Christ, St. Philippe, and on a high hill at the north of Hierapolis antique city center. St. Philippe had firstly come to Hierapolis in 80 A. D. and wanted to extend the believers of Christianity,however he had been killed at the place where Martyrion had been constructed. It is known that Martyrion was constructed in the memory of St. Philippe during the end of 4th century or at the beginning of 5th century. The grave of the St. Philippe is thought to be within this central chamber.