Vatican - Vatican City

Vatican City a walled enclavewithin the city of Rome, with an area of approximately 44 hectares (110 acres). The name "Vatican" predates Christianity and comes from the Latin Mons Vaticanus, meaning Vatican Mount. The territory of Vatican City is part of the Mons Vaticanus, and of the adjacent former Vatican Fields. It is in this territory that St. Peter's Basilica, the Apostolic Palace, the Sistine Chapel, and museums were built, along with various other buildings. The area was part of the Roman rione of Borgo until 1929. Being separated from the city, on the west bank of the Tiber river, the area was an outcrop of the city that was protected by being included within the walls of Leo IV (847–55), and later expanded by the current fortification walls, built under Paul III (1534–49), Pius IV (1559–65) and Urban VIII (1623–44).
St. Peter's Basilica (Latin: Basilica Sancti Petri; Italian: Basilica di San Pietro in Vaticano) is a Late Renaissance church located within Vatican City. And papa Francesco.

Rite	Roman
Year consecrated	1626
Ecclesiastical or organizational status	Major basilica
Architectural description
Architect(s)	Donato Bramante Antonio da Sangallo the Younger Michelangelo Jacopo Barozzi da Vignola Giacomo della Porta Carlo Maderno Gian Lorenzo Bernini
Architectural style	Renaissance and Baroque
Groundbreaking	18 April 1506
Completed	18 November 1626
Specifications
Length	730 feet (220 m)
Width	500 feet (150 m)
Height (max)	452 feet (138 m)
Dome dia. (outer)	137.7 feet (42.0 m)
Dome dia. (inner)	136.1 feet (41.5 m)