St. Peter's Basilica is one of the holiest sites in Christianity. It is traditionally believed to be built on the burial site of St. Peter, one of Jesus' twelve apostles and the first Bishop of Rome (Pope). The basilica holds great religious and historical importance for Catholics. The basilica is renowned for its splendid Renaissance and Baroque architecture. It was designed by leading architects such as Donato Bramante, Michelangelo, Carlo Maderno, and Gian Lorenzo Bernini.

St. Peter's Dome, also known as the Dome of St. Peter's Basilica, is an iconic architectural masterpiece located in Vatican City. Designed by the famous Renaissance artist and architect Michelangelo Buonarroti, this majestic dome is a symbol of both artistic and engineering excellence. The dome boasts impressive dimensions, with an outer diameter of approximately 42 meters (138 feet). It reaches a remarkable height of approximately 132 meters (434 feet) from the ground to the top of the cross.