San Cosimato

The Aqua Augusta was a short aqueduct in Rome. Owing to severe drought, the Emperor Augustus built the Aqua Augusta in or around 33 BC in order to supplement the Aqua Marcia, and then later the Aqua Claudia when required. However, the aqueduct was poorly designed and most of it collapsed in 27 BC.

In Ancient Rome, the Aqua Alsietina (sometimes called Aqua Augusta) was the earlier of the two western Roman aqueducts, erected sometime around 2BC, during the reign of emperor Augustus. It was the only water supply for the Transtiberine region, on the right bank of the river Tiber. This aqueduct acquired water mainly from a lake just north of Rome called Lacus Alsietinus (a small lake in southern Etruria, currently known as Lago di Martignano) and some from Lacus Sabatinus (Lago di Bracciano). The length of this mainly subterranean aqueduct was 22,172 paces (about 32.8 km) and had arches supporting 358 paces (about 0.53 km). Its water supply had a diameter of 392 quinariae (about 9 m). This water was not suitable for drinking, however, and emperor Augustus used it to fill his naumachia in Trastevere. This water supply allowed him and the public to enjoy sham naval battles. The water surplus was used for the irrigation of Caesar's horti (gardens) and for the irrigation of fields. Such an abundant supply of water gives an idea how much water Rome had at its disposal. In his chief work, De aquaeductu (written in 97 CE), containing a history and description of the water-supply of Rome, Sextus Julius Frontinus ascribes only a meager volume to the Aqua Alsietina. This makes sense, if the naumachia was no longer in use in his time (second half of the first century CE). Some traces of this aqueduct were discovered in 1720. An inscribed stone slab was found in 1887 near the Via Claudia. It is the only written record of the Aqua Alsietina. The fountain of the Acqua Paola in Rome, built under Pope Paul V announces wrongly on its triumphal arch that "Paul V restored the ancient ducts of the Aqua Alsietina". Actually the engineers had rebuilt the old Aqua Traiana, which had run close to the Aqua Alsietina.

Santi Quaranta Martiri e San Pasquale Baylon is a Roman Catholic church, built in a late-Baroque style, located on Via San Francesco a Ripa in the Rione Trastevere, Rome, Italy.

San Callisto (English: Saint Callixtus, Latin: S. Calixti) is a Roman Catholic titular church in Rome, Italy, built over the site of Pope Callixtus I's martyrdom (c. AD 222). The original building dates from the time of Pope Gregory III (r. 731–741), who ordered the building of a church on the site. The church has been rebuilt twice since, first in the twelfth century, and the current church in 1610. In 1458 Callixtus III decreed it a titular church as a seat for Cardinals.Established in 1517, the Titulus San Calixti is currently held by Willem Jacobus Cardinal Eijk.

The Pontifical Institute of Arab and Islamic Studies (PISAI) traces the origins of its foundation back to 1926 and the work of the Missionaries of Africa (White Fathers) in Tunisia in a training centre for missionaries preparing to work in Muslim countries. In 1931 this foundation took the name Institut de Belles Lettres Arabes (IBLA). In 1949 it was decided to separate the teaching section from the other activities undertaken at IBLA which were more linked to the specifically Tunisian cultural scene. So a study centre was opened at Manouba (near Tunis) which welcomed students of Arabic language and Islamic sciences. Later, in accordance with a Decree of the Sacred Congregation for Seminaries and Universities dated 19 March 1960, this training institute was raised to the Pontifical Institute for Oriental Studies. In 1964, the Institute was transferred to Rome and its name changed to the Pontifical Institute for Arabic Studies thus avoiding any confusion with the already existing Pontifical Oriental Institute. In 1967, at the wish of Pope Paul VI, the Institute was situated in part of the Palazzo di S. Apollinare. The sole teaching language, other than Arabic, was French. In 1972 an English-speaking section was added. Italian was also adopted later. Since 1966, the Institute has had the faculty to award the Licentiate in Arabic and Islamic Studies at the end of a two-year course of study and preceded by a preparatory year. In accordance with Decree No. 292/80/5 of 25 May 1980, the Congregation for Catholic Education granted the Institute the authority to award the Doctorate. The name currently held by the Institute is the Pontifical Institute for Arabic and Islamic Studies (PISAI). Its new Statutes were approved by the Congregation for Catholic Education in Decree No. 826/79 on 13 September 2008.

The Palazzo San Callisto (also known as the Palace of Saint Callixtus) is a Baroque palace in the Trastevere neighborhood of Rome and one of the extraterritorial Properties of the Holy See. The original Palazzo is located in the Piazza di Santa Maria in Trastevere, the later extensions have their entrance in Piazza di San Callisto. The entire complex is one of the areas of the Holy See regulated by the 1929 Lateran Treaty signed with the Kingdom of Italy. As such it has extraterritorial status. In the courtyard of the palace is the well where, according to tradition, Pope Callixtus I was martyred in the year 222.

The Fountain in Piazza Santa Maria in Trastevere is a fountain located in the square in front of the church of Santa Maria in Trastevere, Rome, Italy. It is believed to be the oldest fountain in Rome, dating back, according to some sources, to the 8th century. The present fountain is the work of Donato Bramante, with later additions by Gian Lorenzo Bernini and Carlo Fontana.

The Basilica of Santa Maria in Trastevere (Italian: Basilica di Santa Maria in Trastevere); English: Our Lady in Trastevere) is a titular minor basilica in the Trastevere district of Rome, and one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140–43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I. The church has large areas of important mosaics from the late 13th century by Pietro Cavallini.

Blessed Ludovica Albertoni (Italian: Beata Ludovica Albertoni) is a funerary monument by the Italian Baroque artist Gian Lorenzo Bernini. The Trastevere sculpture is located in the specially designed Altieri Chapel in the Church of San Francesco a Ripa in Rome, Italy. Bernini started the project in 1671, but his work on two other major works—The Tomb of Pope Alexander VII and the Altar of the Blessed Sacrament in St. Peter's Basilica—delayed his work on the funerary monument. Bernini completed the sculpture in 1674; it was installed by 31 August 1674.

John Cabot University (JCU) is a private American-style university in Rome, Italy. It was founded in 1972 and it offers undergraduate degrees, graduate degrees, and study abroad programs to English-speaking students. The university has more than 700 degree-seeking students and more than 1000 visiting students every year, representing over 80 nationalities. The average class size is fifteen students. The university consists of three campuses and two residence halls centrally located in Trastevere, Rome. The language of instruction is English.

San Francesco a Ripa is a church in Rome, Italy. It is dedicated to Francis of Assisi who once stayed at the adjacent convent. The term Ripa refers to the nearby riverbank of the Tiber.

The Museo di Roma in Trastevere was established in 1977 in the restored Carmelite convent of Sant'Egidio. It was initially known as the Museo del Folklore e dei Poeti Romaneschi ("museum of folklore and Roman dialect poets"). Following a period of closure it was reopened under its present name in 2000. In addition to a permanent collection related to the recent culture of Rome the museum also houses temporary exhibitions, including the annual World Press Photo exhibition. It is part of the Museo di Roma.