Gian Lorenzo Bernini in the context of "Italian architect"

The Papal Basilica of Saint Peter in the Vatican (Italian: Basilica Papale di San Pietro in Vaticano), or simply St. Peter's Basilica (Latin: Basilica Sancti Petri; Italian: Basilica di San Pietro [baˈziːlika di sam ˈpjɛːtro]), is a church of the Italian High Renaissance located in Vatican City, an independent microstate enclaved within the city of Rome, Italy. It was initially planned in the 15th century by Pope Nicholas V and then Pope Julius II to replace the ageing Old St. Peter's Basilica, which was built in the fourth century by Roman emperor Constantine the Great. Construction of the present basilica began on 18 April 1506 and was completed on 18 November 1626.

Designed principally by Donato Bramante, Michelangelo, and Carlo Maderno, with piazza and fittings by Gian Lorenzo Bernini, Saint Peter's is one of the most renowned works of Italian Renaissance architecture and is the largest church in the world by interior measure. While it is neither the mother church of the Catholic Church nor the cathedral of the Diocese of Rome (these equivalent titles being held by the Archbasilica of Saint John Lateran in Rome), Saint Peter's is regarded as one of the holiest Catholic shrines. It has been described as "holding a unique position in the Christian world", and as "the greatest of all churches of Christendom".

In classical architecture, a colonnade is a long sequence of columns joined by their entablature, often free-standing, or part of a building. Paired or multiple pairs of columns are normally employed in a colonnade which can be straight or curved. The space enclosed may be covered or open. In St. Peter's Square in Rome, Bernini's great colonnade encloses a vast open elliptical space.

When in front of a building, screening the door (Latin porta), it is called a portico. When enclosing an open court, a peristyle. A portico may be more than one rank of columns deep, as at the Pantheon in Rome or the stoae of Ancient Greece.

The Galleria Borghese or Borghese Gallery is an art gallery in Rome, Italy, housed in the former Villa Borghese Pinciana. At the outset, the gallery building was integrated with its gardens, but nowadays the Villa Borghese gardens are considered a separate tourist attraction. The Galleria Borghese houses a substantial part of the Borghese Collection of paintings, sculpture and antiquities, begun by Cardinal Scipione Borghese, the nephew of Pope Paul V (reign 1605–1621). The building was constructed by the architect Flaminio Ponzio, developing sketches by Scipione Borghese himself, who used it as a villa suburbana, a country villa at the edge of Rome.

The museum displays one of the most prestigious art collections in the world, with masterpieces by artists such as Caravaggio, Bernini, Canova, Raphael and Titian. Scipione Borghese was an early patron of Bernini and an avid collector of works by Caravaggio, who is well represented in the collection by his Boy with a Basket of Fruit, St Jerome Writing, Sick Bacchus and others. Additional paintings of note include Titian's Sacred and Profane Love, Raphael's Entombment of Christ and works by Peter Paul Rubens and Federico Barocci. Considered among the greatest masterpieces of Italian art, some of these works show the evolution of art between the Renaissance, the Baroque and the Neoclassicism, artistic movements born in the Italian peninsula and subsequently spread throughout Europe.

A pope is the Bishop of Rome and the leader of the Catholic Church. Approximately 100 papal tombs are at least partially extant, representing fewer than half of the 266 deceased popes, from Saint Peter to Pope Francis.

For the first few centuries in particular, little is known of the popes and their tombs, and available information is often contradictory. As with other religious relics, multiple sites claim to house the same tomb. Furthermore, many papal tombs that recycled sarcophagi and other materials from earlier tombs were later recycled for their valuable materials or combined with other monuments. For example, the tomb of Pope Leo I was combined with Leos II, III, and IV circa 855, and then removed in the seventeenth century and placed under his own altar, below Alessandro Algardi's relief, Fuga d'Attila. The style of papal tombs has evolved considerably throughout history, tracking trends in the development of church monuments. Notable papal tombs have been commissioned from sculptors such as Michelangelo and Gian Lorenzo Bernini.

Scala Regia is a flight of steps in the Vatican City and is part of the formal entrance to the Vatican. It was designed by Gian Lorenzo Bernini.

The official entrance to the Apostolic Palace is the Portone di Bronzo at the north side of St Peter's Square. The door opens to the Scala Regia, which leads up to the Sala Regia, which in turn connects to the Sistine Chapel and the Pauline Chapel. Tourists are allowed to climb the staircase to enter the Sala Regia.

Baroque sculpture is the sculpture associated with the Baroque style of the period between the early 17th and mid 18th centuries. In Baroque sculpture, groups of figures assumed new importance, and there was a dynamic movement and energy of human forms—they spiralled around an empty central vortex, or reached outwards into the surrounding space. Baroque sculpture often had multiple ideal viewing angles, and reflected a general continuation of the Renaissance move away from the relief to sculpture created in the round, and designed to be placed in the middle of a large space—elaborate fountains such as Gian Lorenzo Bernini‘s Fontana dei Quattro Fiumi (Rome, 1651), or those in the Gardens of Versailles were a Baroque speciality. The Baroque style was perfectly suited to sculpture, with Bernini the dominating figure of the age in works such as Ecstasy of Saint Theresa (1647–1652). Much Baroque sculpture added extra-sculptural elements, for example, concealed lighting, or water fountains, or fused sculpture and architecture to create a transformative experience for the viewer. Artists saw themselves as in the classical tradition, but admired Hellenistic and later Roman sculpture, rather than that of the more "Classical" periods as they are seen today.

Baroque sculpture followed Renaissance and Mannerist sculpture and was succeeded by Rococo and Neoclassical Sculpture. Rome was the earliest centre where the style was formed. The style spread to the rest of Europe, and especially France gave a new direction in the late 17th century. Eventually it spread beyond Europe to the colonial possessions of the European powers, especially in Latin America and the Philippines.

St. Peter's Square (Latin: Forum Sancti Petri, Italian: Piazza San Pietro [ˈpjattsa sam ˈpjɛːtro]) is a large plaza located directly in front of St. Peter's Basilica in Vatican City, the papal enclave in Rome, directly west of the neighborhood (rione) of Borgo. Both the square and the basilica are named after Saint Peter, an apostle of Jesus whom Catholics consider the first Pope.

At the centre of the square is the Vatican obelisk, an ancient Egyptian obelisk erected at the current site in 1586. Gian Lorenzo Bernini designed the square almost 100 years later, including the massive Tuscan colonnades, four columns deep, which embrace visitors in "the maternal arms of Mother Church". A granite fountain constructed by Bernini in 1675 matches another fountain designed by Carlo Maderno in 1613.