History
During antiquity, it belonged to the IX Augustan region called Circus Flaminius . In this area Domitianus built his stadium and an Odeon (Odeum in Latin), for musical and poetic competitions. Pompey too built there his curia .
Around the 1200 the area was called Parione e S. Lorenzo in Damaso and the population kept on increasing until the 15th century, when the borough obtained a great importance thanks to the paving of Campo de' Fiori, that soon became an important economic center.
Under Sixtus IV (1471–1484) the rione lost its chaotic look, typical of the Middle Ages, for a cleaner and tidier one, typical of the Renaissance. Recovering buildings, enlarging streets, building the new bridge Ponte Sisto connecting Trastevere and Parione, improved the quality of the area.
Thanks to this renewal, urbanisation increased between the 15th and the 16th century. In the same period, several artists were asked to renew the front of the greatest buildings: this habit was born in the northern Italy and was spreading in that period. In 1500 most of the commercial activity slowly moved from Campo de' Fiori to Piazza Navona, that was the favorite place since it was wider.
From 1574 to 1674, the appearance of Piazza Navona changed vastly, thanks to the work of Bernini, Borromini, and Bramante.
From this period until Rome became capital of unified Italy in 1870 there were no major changes but the opening of Corso Vittorio Emanuele II, a great street having a flexuous track in order to avoid the already existing palaces. If a palace was jutting, its front was moved backwards to preserve it.
Piazza Navona is a public open space in Rome, Italy. It is built on the site of the 1st century AD Stadium of Domitian and follows the form of the open space of the stadium in an elongated oval. The ancient Romans went there to watch the agones ("games"), and hence it was known as "Circus Agonalis". It is believed that over time the name changed to in avone to navone and eventually to navona.
The properties of the Holy See are regulated by the 1929 Lateran Treaty signed with the Kingdom of Italy. Although part of Italian territory, some of them enjoy extraterritoriality similar to those of foreign embassies.
The Palazzo della Cancelleria is a Renaissance palace in Rome, Italy, situated between the present Corso Vittorio Emanuele II and the Campo de' Fiori, in the rione of Parione. It was built 1489–1513 by Baccio Pontelli and Antonio da Sangallo the Elder as a palace for Raffaele Cardinal Riario, Camerlengo of the Holy Roman Church, and is regarded as the earliest Renaissance palace in Rome.
Campo de' Fiori is a rectangular square south of Piazza Navona in Rome, Italy, at the border between rione Parione and rione Regola. It is diagonally southeast of the Palazzo della Cancelleria and one block northeast of the Palazzo Farnese. Campo de' Fiori, translated literally from Italian, means "field of flowers". The name dates to the Middle Ages when the area was a meadow.
Monti is the 1st rione of Rome, Italy, identified by the initials R. I, located in Municipio I. The name literally means 'mountains' in Italian and comes from the fact that the Esquiline, the Viminal Hills, and parts of the Quirinal and the Caelian Hills belonged to this rione: currently, however, the Esquiline Hill belongs to the rione Esquilino.
Trevi is the 2nd rione of Rome, Italy, identified by the initials R. II, located in Municipio I. The origin of its name is not clear, but the most accepted theory is that it comes from the Latin trivium, because there were three streets all leading to the current Piazza dei Crociferi, a square next to the modern Trevi square. Its coat of arms is made of three swords on a red background.
Ponte is the 5th rione of Rome, Italy, identified by the initials R. V, and is located in Municipio I. Its name comes from Ponte Sant'Angelo, which connects Ponte with the rione of Borgo. This bridge was built by Emperor Hadrian in 134 AD to connect his mausoleum to the rest of the city. Though Pope Sixtus V changed the rione limits, so that the bridge belongs now to Borgo, not to Ponte anymore, the area has kept its name and a bridge as its coat of arms.
Colonna is the 3rd rione of Rome, Italy, identified by the initials R. III and located at the city's historic center in Municipio I. It takes its name from the Column of Marcus Aurelius in the Piazza Colonna, the rione's main square.
Sant'Eustachio is the 8th rione of Rome, Italy, identified by the initials R. VIII. It is named after the eponymous church and is located within the Municipio I.
Regola is the 7th rione of Rome, Italy, identified by the initials R. VII, and belongs to the Municipio I. The name comes from Arenula, which was the name of the soft sand that the river Tiber left after the floods, and that built strands on the left bank.
Pigna is the 9th rione of Rome, Italy, identified by the initials R. IX, and belongs to the Municipio I. The name means "pine cone" in Italian, and the symbol of the rione is the colossal bronze pine cone standing in the middle of the homonymous fountain. The fountain, which was initially located in the Baths of Agrippa, now decorates a vast niche in the wall of the Vatican facing the Cortile della Pigna, located in Vatican City.
Borgo is the 14th rione of Rome, Italy. It is identified by the initials R. XIV and is included within Municipio I.
Campo Marzio is the 4th rione of Rome, Italy, identified by the initials R. IV. It belongs to the Municipio I and covers a smaller section of the area of the ancient Campus Martius. The logo of this rione is a silver crescent on a blue background.
Palazzo Braschi is a large Neoclassical palace in Rome, Italy and is located between the Piazza Navona, the Campo de' Fiori, the Corso Vittorio Emanuele II and the Piazza di Pasquino. It presently houses the Museo di Roma, the "Museum of Rome", covering the history of the city in the period from the Middle Ages through the nineteenth century.
Spagna is an underground station on Line A of the Rome Metro, in the rione Campo Marzio, which was inaugurated in 1980.
Charitable institutions attached to churches in Rome were founded right through the medieval period and included hospitals, hostels, and others providing assistance to pilgrims to Rome from a certain "nation", which thus became these nations' national churches in Rome. These institutions were generally organized as confraternities and funded through charity and legacies from rich benefactors belonging to that "nation". Often, they were also connected to national scholæ, where the clergymen of that nation were trained. The churches and their riches were a sign of the importance of their nation and of the prelates that supported them. Up to 1870 and Italian unification, these national churches also included churches of the Italian states.
Corso Vittorio Emanuele II, commonly known as Corso Vittorio, is a wide east–west thoroughfare that courses through Rome. It connects a bridge over the Tiber, Ponte Vittorio Emanuele II, to both the Via Torre Argentina and Via del Plebiscito. The latter Via continues east from Piazza del Gesù and along Palazzo Venezia to reach Piazza Venezia which sits below the massive white Monument to Vittorio Emanuele II.
San Pantaleo is an ancient church located on a piazza of the same name along Corso Vittorio Emanuele II in the Parione neighborhood of Rome, Italy. It shares the Piazza with the Museo di Roma in Palazzo Braschi. A church at the site dates from the 12th-century, but the present facade (1807) is in a Neoclassical style and the interiors were elaborated in a Baroque style.
The following outline is provided as an overview of and topical guide to Rome:
Italy 
