Peter and his successors were given the keys to the Kingdom of Heaven.
Peter didn't have any successors...And it was Peter and his fellow disciples who received the keys to the Kingdom of Heaven...
22 But I saw no temple in it, for the Lord God Almighty and the Lamb are its temple. 23 The city had no need of the sun or of the moon to shine in it,[j] for the glory[k] of God illuminated it. The Lamb is its light. 24 And the nations of those who are saved[l] shall walk in its light, and the kings of the earth bring their glory and honor into it.[m] 25 Its gates shall not be shut at all by day (there shall be no night there).