The remains of St. Peter are buried in St. Peter's Bassilica in the Vatican. Where he was crucified upside down for the charge of spreading the Christian faith in the city of Rome.
The miracle of miracles, which has been declared unto the world, is the transformation of Rome. Because of his piety and the faith of Christians (even holding mass in the catacombs to escape persecution from Roman guards), the faith spread through the city like wildfire. And from Rome, unto the territories that it controlled.
Rome, the capital of the Pagan Roman Empire became 'Christian' within 2 centuries after the death of Christ. The capital of the once pagan empire became Christian and would spread Christianity to the four corners of Europe.
That is, to me, a miracle within itself.
Truly, it is true when they say "The Lord works in mysterious ways".
The very army and people that crucified the Lord on the cross; he used them to spread the Christian Faith. Eventually to the world.
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