so much retardation in one post
You are making people suspect St Peter because he was crucified upside down? St Peter, whose two letters are holy scripture?
A spiral staircase built centuries ago is suspect because of the pedo symbol?
The Key symbolism in St Peter's is because of the Bible scripture: (Mt 16:18-19) "That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it. [19] And I will give to thee the keys of the kingdom of heaven. And whatsoever thou shalt bind upon earth, it shall be bound also in heaven: and whatsoever thou shalt loose upon earth, it shall be loosed also in heaven. "
The Paul VI assembly hall is snake shaped/satanic, but that was built after the 2nd Vatican Council.