Santi Quattro Coronati

The Porta Querquetulana or Querquetularia was a gateway in the Servian Wall, named after the sacred grove of the Querquetulanae adjacent to and just within it. The grove appears not to have still existed in the latter 1st century BC.The location of the gate is problematic. Lawrence Richardson located it at the edge of Regio V Esquiliae, with the Clivus Scauri passing through it. Platner located the gate and the wood on or near the Caelian Hill, but between the Porta Capena and the Porta Caelimontana. The Caelian Hill was supposed to have been named Querquetulanus before it was settled by Caelius Vibenna and named for him, and the location of the gate on the Caelian is based in part on the earlier name.In the early 21st century, photogrammetric data and 3D visualization have suggested that the grove of the Querquetulanae may have been incorporated into the Gardens of Maecenas. A nymphaeum from the time of Hadrian would have replaced the natural spring within it. In this view, the grove was located in Regio III, along the Via Labicana. A location on the Esquiline Hill is also possible. Pliny places the Porta Querquetulana between Jupiter Fagutalis and the Viminal Hill, and thus within the Esquiline.

The Basilica of Saint Clement (Italian: Basilica di San Clemente al Laterano) is a Latin Catholic minor basilica dedicated to Pope Clement I located in Rome, Italy. Archaeologically speaking, the structure is a three-tiered complex of buildings: (1) the present basilica built just before the year 1100 during the height of the Middle Ages; (2) beneath the present basilica is a 4th-century basilica that had been converted out of the home of a Roman nobleman, part of which had in the 1st century briefly served as an early church, and the basement of which had in the 2nd century briefly served as a mithraeum; (3) the home of the Roman nobleman had been built on the foundations of republican era villa and warehouse that had been destroyed in the Great Fire of AD 64.

The Gardens of Maecenas, or Horti Maecenatis, constituted the luxurious ancient Roman estate of Gaius Maecenas, an Augustan-era imperial advisor and patron of the arts. The property was among the first in Italy to emulate the style of Persian gardens. The walled villa, buildings, and gardens were located on the Esquiline Hill, atop the agger of the Servian Wall and its adjoining necropolis, as well as near the Horti Lamiani.

The Gay Street (Italian: Gay Street di Roma) is an area in Rome, Italy designated as a gay- and lesbian-friendly neighborhood. A 300-metre shopping and bar area in the center of the city on Via San Giovanni in Laterano, a street leading to the east flank of the Colosseum, it was formally designated in 2007. The opening ceremonies, led by the Italian LGBT organization Arcigay, were attended by celebrities and national and municipal politicians.

The Caelian Hill (; Latin: Collis Caelius; Italian: Celio [ˈtʃɛːljo]) is one of the famous seven hills of Rome.

The Ludus Magnus (also known as the Great Gladiatorial Training School) was the largest of the gladiatorial schools in Rome. It was built by the emperor Domitian (r. 81–96 C.E.) in the late first century C.E., alongside other building projects undertaken by him such as three other gladiatorial schools across the Roman Empire. The training school is situated directly east of the Colosseum in the valley between the Esquiline and the Caelian hills, an area already occupied by Republican and Augustan structures. While there are remains that are visible today, they belong to a reconstruction that took place under the emperor Trajan (r. 98–117) where the Ludus plane was raised by about 1.5 metres (4 ft 11 in). The Ludus Magnus was essentially a gladiatorial arena where gladiators from across the Roman Empire would live, eat, and practice while undergoing gladiatorial training in preparation for fighting at the gladiatorial games held at the Colosseum.

The Pontifical Irish College is a Roman Catholic seminary for the training and education of priests, in Rome. The College is located at #1, Via dei Santi Quattro, and serves as a residence for clerical students from all over the world. Designated a Pontifical college in 1948, it is the last Irish college in continental Europe.

The Basilica of St. Stephen in the Round on the Celian Hill (Italian: Basilica di Santo Stefano al Monte Celio, Latin: Basilica S. Stephani in Caelio Monte) is an ancient basilica and titular church in Rome, Italy. Commonly named Santo Stefano Rotondo, the church is Hungary's "national church" in Rome, dedicated to both Saint Stephen, the first Christian martyr, and Stephen I, the sanctified first king of Hungary who converted to Christianity and promoted it in his kingdom. The minor basilica is also the rectory church of the Pontifical Collegium Germanicum et Hungaricum. As of 2005, the Cardinal Priest or titular S. Stephano is Friedrich Wetter.

The Baths of Trajan (Italian: Terme di Traiano) were a massive thermae, a bathing and leisure complex, built in ancient Rome starting from 104 AD and dedicated during the kalendae of July in 109. Commissioned by Emperor Trajan, the complex of baths occupied space on the southern side of the Oppian Hill on the outskirts of what was then the main developed area of the city, although still inside the boundary of the Servian Wall. The architect of the complex is said to be Apollodorus of Damascus. The baths were being utilized mainly as a recreational and social center by Roman citizens, both men and women, as late as the early 5th century. The complex seems to have been deserted soon afterwards as a cemetery dated to the 5th century (which remained in use until the 7th century) has been found in front of the northeastern exedra. The baths were thus no longer in use at the time of the siege of Rome by the Ostrogoths in 537; with the destruction of the Roman aqueducts, all thermae were abandoned, as was the whole of the now-waterless Mons Oppius. Early Christian writers misnamed the remains the "Baths of Domitian".

The Arch of Dolabella and Silanus (Latin, Arcus Dolabellae et Silani) or Arch of Dolabella is an ancient Roman arch. It was built by senatorial decree in 10 AD by the consuls P. Cornelius Dolabella and C. Junius Silanus.

The Porta Caelimontana or Celimontana was a gate in the Servian Wall on the rise of the Caelian Hill (Caelius Mons).

The church of San Tommaso in Formis is a small church in Rome, situated on the Caelian Hill.