Martyrium of St Philip the Apostle

The extraordinary octagonal Martyrium of St Philip the Apostle at Hierapolis is built on the site where it's believed that St Philip was martyred. The arches of the eight individual chapels here, marked with crosses, originally had heptagonal interiors. Views from here are wonderful but few of the regular tours bother to bring visitors up this far so you may well have the site and vista to yourself. Tracks head uphill from the Roman theatre.