Paul had quite a journey to Rome where he was eventually executed. I began to think about where he spent his final days and did a little research to see if I could find out more about it. The images here are copyrighted by Historylink101.com & found at the Italy and Rome Picture Gallery.
Notice the cross is upside down. Paul's prison is also the site of Peter's prison per tradition, but there is no scholarly evidence supporting this. Peter was crucified upside down.
Click through to the first comment to find more information and links to more images.