The baldachin between the four pillars right underneath the cupola of Saint Peter’s Basilica in Rome was designed by Gian Lorenzo Bernini. It is one of the most famous works of art inside the church.
Baldachin St. Peter’s Basilica Rome

It is claimed that Bernini took bronze from the roof of the Pantheon in order to use it for the baldachin and that his design was based on Constantine’s Basilica.
The inscription above the Baldachin means: “Thou art Peter, and on this rock I shall build my church. To thee I shall give the keys to the Kingdom of Heavens”.