The Bible doesn't contain an actual account of the death of Peter. However, the gospel of John does contain a prophecy regarding the death of Peter:
"18Verily, verily, I say unto thee, When thou wast young, thou girdedst thyself, and walkedst whither thou wouldest: but when thou shalt be aold, thou shalt stretch forth thy hands, and another shall gird thee, and carry thee whither thou wouldest not.
19This spake he, signifying by what adeath he should glorify God. And when he had spoken this, he saith unto him, Follow me."
Early traditions claim that Peter was crucified head-down.