Baths of Nero

Sant'Eustachio [santeuˈstaːkjo] is a Roman Catholic titular church and minor basilica in Rome, named for the martyr Saint Eustace. It is located on Via di Sant'Eustachio in the rione Sant'Eustachio, a block west of the Pantheon and via della Rotonda, and a block east of Sant'Ivo alla Sapienza and the Via della Dogana Vecchia.

Sant'Eustachio [santeuˈstaːkjo] is the 8th rione of Rome, identified by the initials R. VIII. It is named after the eponymous church and is located within the Municipio I. Its coat of arms depicts the head of a stag with a cross between the antlers, symbol of Saint Eustace: the figure is golden on a red background.

Palazzo Giustiniani or the Piccolo Colle (Little Hill) is a palace on the Via della Dogana Vecchia and Piazza della Rotonda, in Sant'Eustachio, Rome. The palace contains the official residence of the President of the Senate of the Republic, the Sala Zuccari, the offices of the Life senators and former Presidents of Italy, and some administrative offices. From 1901 until 1985, it was also the seat of the Masonic order of the Grand Orient of Italy.

The Grand Orient of Italy (GOI) (Italian: Grande Oriente d'Italia) is an Italian masonic grand lodge founded in 1805; the viceroy Eugene of Beauharnais was instrumental in its establishment. It was based at the Palazzo Giustiniani, Rome, Italy from 1901 until 1985 and is now located at the Villa del Vascello. Its current Grand Master is Italian journalist Stefano Bisi.As of September 2015 the Grand Orient had 22,675 members in 842 lodges, a significant growth over the preceding three-year period.The international influence of the Grand Orient has decreased since it lost the official recognition of the "Home Grand Lodges" (of England, Ireland, and Scotland) owing to alleged corruption, although it remains regular in government and practice.

The Fontana del Pantheon (English: Fountain of the Pantheon) was commissioned by Pope Gregory XIII and is located in the Piazza della Rotonda, Rome, in front of the Roman Pantheon. It was designed by Giacomo Della Porta in 1575 and sculpted out of marble by Leonardo Sormani.In 1711, Pope Clement XI requested that the fountain be modified and had Filippo Barigioni design a new layout, which included a different basin, made of stone, and the Macuteo obelisk, created during the period of Ramses II, set in the centre on a plinth with four dolphins decorating the base. In 1886, the original marble figures were removed, and replaced with copies by Luigi Amici. Today, the originals can be seen in the Museum of Rome. Fontana del Pantheon was the model to Francesco Robba for the Robba fountain, which stands at Town Square in Ljubljana, the capital of Slovenia. It is one of the city's most recognisable symbols.In April 2018 James Pallotta offered to donate €230,000 towards the restoration the fountain and also the fontana dei Leoni in Piazza del Popolo.

The Pantheon (UK: , US: ; Latin: Pantheum, from Greek Πάνθειον Pantheion, "[temple] of all the gods") is a former Roman temple and since 609 AD, a Catholic church (Basilica di Santa Maria ad Martyres or Basilica of St. Mary and the Martyrs), in Rome, Italy, on the site of an earlier temple commissioned by Marcus Agrippa during the reign of Augustus (27 BC – 14 AD). It was rebuilt by the emperor Hadrian and probably dedicated c. 126 AD. Its date of construction is uncertain, because Hadrian chose not to inscribe the new temple but rather to retain the inscription of Agrippa's older temple, which had burned down.The building is cylindrical with a portico of large granite Corinthian columns (eight in the first rank and two groups of four behind) under a pediment. A rectangular vestibule links the porch to the rotunda, which is under a coffered concrete dome, with a central opening (oculus) to the sky. Almost two thousand years after it was built, the Pantheon's dome is still the world's largest unreinforced concrete dome. The height to the oculus and the diameter of the interior circle are the same, 43 metres (142 ft).It is one of the best-preserved of all Ancient Roman buildings, in large part because it has been in continuous use throughout its history: since the 7th century, it has been a church dedicated to St. Mary and the Martyrs (Latin: Sancta Maria ad Martyres) but informally known as "Santa Maria Rotonda". The square in front of the Pantheon is called Piazza della Rotonda. The Pantheon is a state property, managed by Italy's Ministry of Cultural Heritage and Activities and Tourism through the Polo Museale del Lazio. In 2013, it was visited by over 6 million people. The Pantheon's large circular domed cella, with a conventional temple portico front, was unique in Roman architecture. Nevertheless, it became a standard exemplar when classical styles were revived, and has been copied many times by later architects.

The Arch of Pietas (Latin : Arcus Pietatis) was an ancient Roman triumphal arch to the north of the Pantheon on the Campus Martius in Rome.

Palazzo Lante, also known as either Palazzo Medici Lante or Medici Lante della Rovere, is a Renaissance-style aristocratic palace located on Piazza Dei Caprettari #72, near the church of Sant'Eustachio in the rione named after the church in central Rome, Italy. Presently the palace houses both the offices of the national Institute of Nuclear Physics and the Institute of Culture Pantheon.

The Piazza della Rotonda is a piazza (city square) in Rome, Italy, on the south side of which is located the Pantheon. The square gets its name from the Pantheon's informal title as the church of Santa Maria Rotonda.

Sant'Ivo alla Sapienza (lit. 'Saint Ivo at the Sapienza (University of Rome)') is a Roman Catholic church in Rome. Built in 1642–1660 by the architect Francesco Borromini, the church is widely regarded a masterpiece of Roman Baroque architecture. The church is at the rear of a courtyard at 40, Corso del Rinascimento; the complex is now used by the State Archives of Rome.

Centro Storico is the first urban zone of Rome, identified by the initials 1A. It belongs to the Municipio I and it includes the main part of the city center.

The Contarelli Chapel or Cappella Contarelli is located within the church of San Luigi dei Francesi in Rome. It is famous for housing three paintings on the theme of Saint Matthew the Evangelist by the Baroque master Caravaggio. The paintings were Caravaggio's first major public commission and one that cemented his reputation as a master artist. The chapel commemorates the French cardinal Matthieu Cointerel.