From the celio one touches the sky

The Arch of Constantine (Italian: Arco di Costantino) is a triumphal arch in Rome, situated between the Colosseum and the Palatine Hill. It was erected by the Roman Senate to commemorate Constantine I's victory over Maxentius at the Battle of Milvian Bridge in 312. Dedicated in 315, it is the largest Roman triumphal arch.

The Basilica of Saints John and Paul on the Caelian Hill (Italian: Basilica dei Santi Giovanni e Paolo al Celio) is an ancient basilica church in Rome, located on the Caelian Hill.The church was built in 398, by will of the senator Pammachius, over the home of two Roman soldiers, John and Paul, martyred under the emperor Julian in 362.

San Gregorio Magno al Celio, also known as San Gregorio al Celio or simply San Gregorio, is a church in Rome, Italy, which is part of a monastery of monks of the Camaldolese branch of the Benedictine Order. On March 10, 2012, the 1,000th anniversary of the founding of the Camaldolese in 1012 was celebrated here at a Vespers service attended by Anglican and Catholic prelates and jointly led by Pope Benedict XVI and Rowan Williams, Archbishop of Canterbury.

The Temple of Claudius, also variously known as the Temple of the Divus Claudius, the Temple of the Divine Claudius and the Temple of the Deified Claudius, was an ancient structure that covered a large area to the south of the Colosseum in Rome, Italy. Little remains visible today.

The Minor Basilica of St. Mary in Domnica alla Navicella (Basilica Minore di Santa Maria in Domnica alla Navicella), or simply Santa Maria in Domnica or Santa Maria alla Navicella, is a Roman Catholic basilica in Rome, Italy, dedicated to the Blessed Virgin Mary and active in local charity according to its long tradition.

The Porta Caelimontana or Celimontana was a gate in the Servian Wall on the rise of the Caelian Hill (Caelius Mons). The Via Caelimontana ran from it; in the late 19th and early 20th centuries, Roman tombs were discovered along its southern edge, some of which have disappeared.The gate was rebuilt during the principate of Augustus.

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 arch is located on the Caelian Hill, at the north corner of the site of the Castra Peregrina.

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

The Castra Peregrina ("camp of the strangers") was a castrum (a military barracks) in Rome situated on the Caelian Hill. It was occupied by various military units during the later part of the Roman Empire.

The Villa Celimontana (previously known as Villa Mattei) is a villa on the Caelian Hill in Rome, best known for its gardens. Its grounds cover most of the valley between the Aventine Hill and the Caelian.