| Santa Maria della Concezione in Campo Marzio | |
| Fullname: | Church of Saint Mary of the Conception in the Field of Mars |
| Native Name: | Chiesa di Santa Maria della Concezione in Campo Marzio |
| Native Name Lang: | it |
| Mapframe: | yes |
| Mapframe-Caption: | Click on the map for a fullscreen view |
| Mapframe-Zoom: | 12 |
| Mapframe-Marker: | religious-christian |
| Location: | Piazza in Campo Marzio 45, Campo Marzio, Rome |
| Coordinates: | 41.9014°N 12.4765°W |
| Country: | Italy |
| Language(S): | Syriac, Syrian Arabic |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Syriac Catholic Church |
| Tradition: | West Syriac Rite |
| Former Names: | --> |
| Status: | national church |
| Founded Date: | 1564 |
| Dedication: | Immaculate Conception |
| Architect: | Giacomo della Porta, Giovanni Antonio de' Rossi |
| Groundbreaking: | 1562 |
| Completed Date: | 1660 |
Santa Maria della Concezione is a church in Rome, located on Piazza Campo Marzio in the Campo Marzio rione. It serves as the national church in Rome for Syriac Catholics.
The church and its adjoining monastery traditionally originated in connection with the Iconoclastic controversy within the Byzantine Empire, when some Basilian nuns fled from Constantinople to Rome in the 8th century. They brought with them various relics, including the body of Gregory of Nazianzus. They were given a home on the site now occupied by the church, where they founded a monastery with a chapel dedicated to the Virgin Mary and an oratory next to the church to contain Gregory's remains. The earliest reference to the monastery is Regestum Sublacense, a charter of 6 October 937.
Between 1562 and 1564 abbess Chiarina Colonna (from the powerful Colonna family) built a new church dedicated to the Virgin Mary behind the ancient chapel and oratory of Saint Gregory, accessible via the convent or from outside it. It had a single nave and a rectangular apse. Saint Gregory's body was translated to the Basilica of St Peter in 1580.
In the 17th century the convent was enlarged and re-ordered by Carlo Maderno and Francesco Peparelli, with work completed by 1660. The 16th century church was completely rebuilt according to the wishes of abbess Maria Olimpia Pani, to plans by Giovanni Antonio De Rossi.
During excavations in 1777 as part of expanding the convent a column was discovered - this was re-erected in 1856 in the Piazza di Spagna as the base for a statue of the Virgin of the Immaculate Conception, in commemoration of that belief being proclaimed a dogma by pope Pius IX.
During the Napoleonic occupation of Rome the church was deconsecrated and used as a lottery office. It reopened to the public in 1816 and now holds services according to the Syrian-Antioch rite, as the national church for Syria and the seat of the procurator to the Holy See for the Syrian Catholic Patriarchate of Antioch.
In front of the church's facade is the internal courtyard of the monastery, at the side of piazza Campo Marzio and entered via a three-arched portico.