Saint Peter's Basilica is built between 1506-1626 and is one of the four Basilicas in Rome. Saint Peter's Basilica, also called Papal Basilica of St. Peter, is one of the largest in the world and most significant churches in the whole Christendom. Donato Bramante designed the basilica, Giuliano da Sangallo, Fra Giocondo, Raffaello Sanzio da Urbino, Baldassare Peruzzi, Antonio da Sangallo the second. But out of all of them, Michelangelo's contribution is the greatest.
The old building of the basilica was built in the fourth century. The construction of a church was ordered by Emperor Constantine. After standing strong for such a long time, Pope Julius, the second, decided to tear down the building and construct a new one on the same site. Michelangelo was commissioned to design the basilica and the pope's tomb too.
Michelangelo's vision and artistic freedom are seen on the massive central dome of Basilica.
The total height of the dome is 136,57 meters from the floor to the top of the external cross. By that account, Saint Peter’s Basilica has the tallest dome in the world. The diameter of the dome is approximately 9,1 meters greater than Constantinople’s Hagia Sophia church. The internal diameter is 41,47 meters.