Arguably one of the finest Cathedrals in the entire world, St. Peter's is the spiritual center of the Vatican and the product of many of Italy's great Renaissance's architects, among them Bramante, Raphael and Michelangelo.
The world's smallest state, center of Catholicism, and home to the Pope.
The most beautiful work inside St. Peter's Cathedral is Michelangelo's famous La Pietà, considered by many to be the most moving piece of sculpture ever created.
Probably the most famous chapel in the world because of its incredible artwork, notably "The Last Judgment," Michelangelo's stunning fresco covering 10,000 square feet of the ceiling and wall.
This grand and magnificent square has retained its classical beauty and serves as the place from which the masses receive the Pope's weekly blessing.
With more than five miles of corridors, this vast complex of museums chronicles the history and accomplishments of mankind over the last 2000 years, featuring classic masterpieces such as Rodin's "Thinker" and the Sistine Chapel.
When Pius XII ordered a thorough excavation of the area under the High Altar in St. Peter's Basilica, twisting stone passages were found leading to an ancient Roman necropolis, which contained chambers 10- to 15-feet wide with preserved frescoes and mosaics.
The Porta Santa, or Holy Door, was only opened by the Pope for Holy Year celebrations and closed at the end of 2000, and will remain sealed until 2025.
Beneath the main floor of St. Peter's Basilica are the tombs of several popes and saints.
In St. Peter's Chapel of the Sacrament is where Bernini's monument to Alexander VII is located.
This masterpiece shows St. Peter sitting bearded and dressed as a philosopher, with his left hand carrying keys, the right hand being raised in blessing.