The spiritual power emanating from the Apostle Peter was so strong that even his shadow moved to those lying on the street sick and healed them. This message was written shortly before the martyrdom of the Apostle Peter: "I know that soon I must leave off this my tabernacle (body), as our Lord Jesus Christ hath shewed me." At the end of his life, the Apostle Peter went back to Rome where he was martyred in '67 by crucifixion upside down.
This icon of St. Peter, one of the twelve apostles of Jesus Christ, is from the year 1320. At some point, it was lost, but was discovered again in London in 1980. It is thought to have been cut from part of a larger piece due to the position of his pose. This icon can be found in the British Museum.
"Tu es Petrus et super hanc petram aedificabo Ecclesiam Meam" (Thou are Peter and upon this rock I will build my Church." Here is a photo tribute to St. Peter, on his feast day, and his successors. http://holymarymotherofgod.wordpress.com/2014/02/22/feast-of-the-chair-of-st-peter/