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Heritage classified

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Origin and history

The church of St. Peter's in Metz has its origin in a Gallo-Roman building of the fourth century, probably a palace or a civil basilica. Built under the Valencian dynasty or under Theodosius, it has walls in opus mixtum (stone and brick), characteristic of late Roman architecture. The city, ravaged by the Alamans in 253, then built a defensive enclosure reusing Roman elements, in a context of increasing insecurity. This building, perhaps unfinished, could have served as a palace (aula palatina), like that of Trier, before its religious conversion.

In the 7th century, the building was transformed into Benedictine abbey church, dedicated to Saint Peter. A stone chancel, decorated with paleo-Christian and "barbaric" motifs (interlaces, plants, animals), is installed to separate the choir from the nave. This chancel, now preserved at the Metz Museum, bears witness to a merovingian or Lombardic influence. A Romanesque nave was added around the year 1000, under the impulse of Emperor Otton I, who enriched the abbey. Written sources, such as the Vita Sanctae Walrade, suggest a foundation by Duke Eleutherius between 595 and 613, under the Merovingian kings Thibert II or Thierry II.

In the 15th and 16th centuries Gothic vaults were added, but the siege of Metz by Charles Quint in 1552 led to the partial destruction of the abbey. In 1556, the building became a military warehouse in the citadel, a function it retained until the 20th century. Ranked a historic monument in 1909 (church) and 1932 (cloister), it was restored from the 1970s to become a concert hall and exhibition hall. Archaeological excavations (1897–1977) revealed traces of thermal baths, a Roman villa, and confirmed its role as a civil basilica before its Christianization.

The date of the Paleo-Christian church remains debated: founded in the 7th century according to the supporters of a Merovingian origin (supported by the animal decorations of the chancel), or in the 8th century for those who see there the work of Chrodegang, bishop of Metz (742–766). The latter, close to the Lombards, reportedly ordered similar chancels for the cathedral. The Austrian diplomas (Otton I at Otton III) confirm, however, its status as a Royal Merovingian abbey, linked to the crown of Austrasia from the 7th century.

The restorations of the 1970s sought to reconcile the historical strata: Roman remains, Nova Scotian, and military installations. The building, one of the oldest in France, now combines Gothic acoustics (acoustic spots discovered) and cultural modernity. His chancel, a masterpiece of Merovingian or Carolingian sculpture, illustrates the transition between Antiquity and the Middle Ages, with unique motifs like Christ in tunic holding a record, interpreted as a symbol of Eucharist or power.

Future

Today, Saint-Pierre-aux-Nonnais has become a hall for concerts and exhibitions.

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