Saint Peter's tomb is a site under St. Peter's Basilica that includes several graves and a structure said by Vatican authorities to have been built to memorialize the location of Saint Peter's grave. The site of St. Peter's tomb is alleged to be near the west end of the Vatican Necropolis, a complex of mausoleums that date between about AD 130 and AD 300.
The Necropolis complex was partially torn down and filled with earth to provide a foundation for the building of the first St. Peter's Basilica during the reign of Constantine I in about AD 330. As the result of two campaigns of archaeological excavation, many bones have been found at the site of the 2nd-century shrine, but Pope Pius XII stated in December 1950 that none could be confirmed to be Saint Peter's with absolute certainty.