The Martyrium of St. Philip marks the spot where he was either crucified upside down or hung by his heels from a tree (supposedly he continued to preach during this process.) His crime? Converting the proconsul’s wife to Christianity. By the way, does his story of the prophesying virginal daughters sound familiar? It’s likely that he became the Christian substitute for recently converted pagans who at one time worshipped Apollo. Remember the Oracle of Delphi, where Apollo’s virgin priestesses foretold the future? They, too, fueled their visions by inhaling volcanic fumes from a fissure. One final similarity: both Apollo and Philip are said to have killed demonic snakes at the sites where these fumes poured forth.