Theatre of Balbus

The Palazzo Mattei di Giove is the most prominent among a group of Mattei houses that forms the insula Mattei in Rome, Italy, a block of buildings of many epochs.To distinguish this section from the others it carries the name of a Mattei fief, Giove. The Mattei owned a number of other palazzi that carried the family name including Palazzo Mattei di Trastevere across the Tiber as well as properties in Umbria, the Palazzo Mattei Paganica.

The Palazzo Caetani, also known as the Palazzo Mattei Caetani, and once known as the Palazzo of Alessandro Mattei or the Palazzo Mattei alle Botteghe Oscure, is an urban palace located on via delle Botteghe Oscure #32 in the rione Sant'Angelo of Rome, Italy. A palace at the site was initially commissioned from the architect Nanni di Baccio Bigio between 1545 and 1564 by Alessandro Mattei; this structure was purchased in 1776, by the Caetani, and has undergone numerous refurbishments. The building contains a number of tenants, including the Brazilian embassy to the Vatican, but also houses the Fondazione Camillo Caetani, including its library. The interior decoration was begun by Alessandro Mattei, who employed the brothers Taddeo and Federico Zuccari in painting some of the works in the piano nobile. Cristoforo Roncalli painted the palace chapel, and collaborated with Paul Bril, to decorate some of the rooms. The Caetani family employed Antonio Cavallucci in some of the 18th-century decorations.

Santa Caterina dei Funari is a church in Rome in Italy, in the rione of Sant'Angelo. The church is mainly known for its façade and its interior with frescoes and paintings.

The Fontana delle Tartarughe (The Turtle Fountain) is a fountain of the late Italian Renaissance, located in Piazza Mattei, in the Sant'Angelo district of Rome, Italy. It was built between 1580 and 1588 by the architect Giacomo della Porta and the sculptor Taddeo Landini. The bronze turtles around the upper basin, usually attributed either to Gian Lorenzo Bernini or Andrea Sacchi, were added in either 1658 or 1659 when the fountain was restored.

Palazzo Costaguti, also known as Palazzo Patrizi Costaguti, is a mannerist architecture Roman, located at the corner of Piazza Mattei with Via della Reginella, in rione Sant’Angelo in Rome. Large in size, it also runs along Via dei Falegnami and its rear facades are in Piazza Costaguti. Currently used as the seat of the Universitas Telematica Mercatorum.

Sant'Angelo is the 11th rione of Rome, Italy, located in Municipio I. Often written as rione XI - Sant'Angelo, it has a coat of arms with an angel on a red background, holding a palm branch in its left hand. In another version, the angel holds a sword in its right hand and a scale in its left.Sant'Angelo, the smallest of Rome's rioni, lies along the Tiber river east of Tiber Island. Rioni bordering this district, clockwise from north to south, include Regola, Sant'Eustachio, Pigna, Campitelli, and Ripa. Sant'Angelo's western border is the river. The rione's terrain is low and flat and, until the construction of the Lungotevere, particularly susceptible to flooding from the river. The historical significance of Sant'Angelo is mainly the result of the presence here of the Roman Ghetto.

Sant'Ambrogio della Massima (also Sant'Ambrogio alla Massima) is a Roman Catholic church in rione Sant'Angelo, Rome, Italy, that perhaps dates to the 4th century. It was a convent until it became the subject of a Vatican investigation in the 19th century, when it was disbanded and repurposed as a missionary college and later an abbey church. It is said to have been associated with Saint Ambrose.

The Temple of the Nymphs was a temple in ancient Rome dedicated to the Nymphs, evidenced in several sources and generally identified with the remains on what is now via delle Botteghe Oscure. The temple was founded in the 3rd century BC or the early 2nd century BC. It was damaged by a fire in the mid 1st century BC and probably also affected by the citywide fire in 80 AD. This temple was on the Campus Martius. If still in use by the 4th-century, the temple would have been closed during the persecution of pagans in the late Roman Empire, when the Christian Emperors issued edicts prohibiting all non-Christian worship and sanctuaries.

Santo Stanislao dei Polacchi (Saint Stanislaus of the Poles, Polish: Kościół św. Stanisława Biskupa i Męczennika w Rzymie), also known as San Stanislao alle Botteghe Oscure, is a Roman Catholic church in Rome, sited on Via delle Botteghe Oscure in the Sant'Angelo rione. It is the national church of Poland in Rome.

The Circus Flaminius was a large, circular area in ancient Rome, located in the southern end of the Campus Martius near the Tiber River. It contained a small race-track used for obscure games, and various other buildings and monuments. It was "built", or sectioned off, by Gaius Flaminius in 221 BC. After Augustus divided the city into 14 administrative regions, the Circus Flaminius gave its name to Regio IX, which encompassed the Circus and all of the Campus Martius west of the Via Lata.

Largo di Torre Argentina is a square in Rome, Italy, with four Roman Republican temples and the remains of Pompey's Theatre. It is in the ancient Campus Martius.The name of the square comes from the Torre Argentina, which takes its name from the city of Strasbourg whose Latin name was Argentoratum. In 1503, the Papal Master of Ceremonies Johannes Burckardt, who came from Strasbourg and was known as "Argentinus", built in via del Sudario a palace (now at number 44), called Casa del Burcardo, to which the tower is annexed. Julius Caesar was assassinated in the Curia of Pompey, and the spot where he is believed to have been assassinated is in the square.After Italian unification, it was decided to reconstruct part of Rome (1909), demolishing the zone of Torre Argentina. However, during the demolition work in 1927, the colossal head and arms of a marble statue were discovered. The archaeological investigation brought to light the presence of a holy area, dating to the Republican era, with four temples and part of Pompey's Theatre. In 2019, Rome's mayor Virginia Raggi announced that walkways would be installed in the site allowing the general public to tour the ruins for the first time.

Julius Caesar, the Roman dictator, was assassinated by a group of senators on the Ides of March (15 March) of 44 BC during a meeting of the Senate at the Curia of Pompey of the Theatre of Pompey in Rome. The senators stabbed Caesar 23 times. They claimed to be acting over fears that Caesar's unprecedented concentration of power during his dictatorship was undermining the Roman Republic, and presented the deed as an act of tyrannicide. At least 60 senators were party to the conspiracy, led by Marcus Junius Brutus and Gaius Cassius Longinus. Despite the death of Caesar, the conspirators were unable to restore the institutions of the Republic. The ramifications of the assassination led to the Liberators' civil war and ultimately to the Principate period of the Roman Empire.