Porticus Octavia

San Carlo ai Catinari, also called Santi Biagio e Carlo ai Catinari ("Saints Blaise and Charles at the Bowl-Makers") is an early-Baroque style church in Rome, Italy. It is located on Piazza Benedetto Cairoli, 117 just off the corner of Via Arenula and Via dei Falegnami, a few blocks south of the church of Sant'Andrea della Valle. The attribute ai Catinari refers to the presence, at the time of its construction, of the many makers of wooden basins (Italian catini) who worked in the area. The church was commissioned by the Order of the Barnabites and funded by the Milanese community in Rome to honour their fellow Milanese St. Charles Borromeo (Italian: San Carlo). It is one of at least three Roman churches dedicated to him, including San Carlo al Corso and San Carlo alle Quattro Fontane (San Carlino).

Santa Maria in Publicolis is a Baroque church in Rome. It is located in the rione of Sant'Eustachio. The facade was designed by Giovan Antonio de' Rossi.

The Fontana del Pianto, also known as the Fontana di piazza delle Cinque Scole, is a monumental fountain located in the Piazza delle Cinque Scole in the rione of Regola in Rome. The fountain presently takes its name from the church of Santa Maria del Pianto, whose southern entrance is located a few yards north. The fountain was moved here in 1930 under Pope Pius XI, from its prior location inside the former Roman Ghetto. It was located a few more yards north, near the northern entrance to the church of Santa Maria del Pianto. The design of the marble fountain was commissioned by Pope Gregory XIII and is attributed to Giacomo della Porta, and completed by Pietro Gucci circa 1591–1593. It consists of a superior and lower basins with mascarons as spouts. The prior location, where the Via Santa Maria del Pianto becomes Via del Portico d'Ottavia, is marked in the street with white bricks. The fountain shares features, such as mascarons and simple basins with another of Della Porta's fountains: the Fontana di Piazza d'Aracoeli.

The Altar of Domitius Ahenobarbus (more properly called the Statuary group base of Domitius Ahenobarbus) is a series of four sculpted marble plaques that probably decorated a base supporting cult statues in the cella of a Temple of Neptune located in Rome on the Field of Mars. The frieze is dated to the end of the second century BC, which makes it the second oldest Roman bas-relief currently known. However, there is also a contemporaneous relief depicting a Roman naval bireme with armed marines, from a temple of Palestrina built c. 120 BC.The sculpted panels are still visible today, with one portion on display at the Louvre (Ma 975) and another at the Glyptothek in Munich (Inv. 239). A copy of this second piece can be seen at the Pushkin Museum in Moscow.

The Temple of Neptune (Latin: Aedes Neptuni) was an ancient Roman temple dedicated to Neptune on the Campus Martius near the Circus Flaminius in Rome.

San Salvatore in Campo is a Roman Catholic church located on the small piazza of the same name, not far from the church of Santissima Trinità dei Pellegrini, in the Rione (district) of Regola of central Rome, Italy.

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.

The Teatro Argentina ( which directly translates into theatre Argentina) is an opera house and theatre located in Largo di Torre Argentina, a square in Rome, Italy. One of the oldest theatres in Rome, it was constructed in 1731 and inaugurated on 31 January 1732 with Berenice by Domenico Sarro. It is built over part of the curia section of the Theatre of Pompey. This curia was the location of the assassination of Julius Caesar.

Santa Maria in Monticelli is a church in the rione of Regola in Rome, sited on the street of the same name. A church was founded at the site in the 12th century and reconsecrated by Innocent II in 1143. It was known as Sancta Maria in Monticellis Arenulae de Urbe, in a bull by Urban IV in 1264. Little remains of the medieval church, except for the bell-tower. The church was entirely reconstructed in 1716 by Matteo Sassi, on a commission by Clement XI, and in 1860 by Francesco Azzurri. The church is the home to the Curia Generalizia dei Padri Dottrinari. The church contains a baroque fresco of the Flagellation attributed to Antonio Carracci; a 13th-century painted wooden crucifix attributed to Pietro Cavallini; a Madonna and child with saints by Sebastiano Conca; and a Head of the Redeemer in mosaic fragments of the 12th century. Near the sanctuary of the church is the contemporary shrine of Blessed César de Bus, the French founder of the "Priests of Christian Doctrine" and the patron saint of catechists.

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.

The Temple of Mars (Latin: Aedes Martis in Circo) was a temple built on the campus Martius in Rome in the 2nd century BC, near the Circus Flaminius, dedicated to Mars. The consul Decimus Junius Brutus Callaicus vowed a temple to Mars in 138 BC and construction began after 135 BC, financed by booty from his campaign in Hispania. It was designed by Hermodorus of Salamis and was dedicated in 132 BC during Junius' triumph. It was restored in the late Republic, retaining its original plan and features. 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 non-Christian worship.

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.