Basilica of Saint-Pierre-aux-Nonnains

The basilica of Saint-Pierre-aux-Nonnains in Metz, France, is one of the oldest churches in Europe [1]. The building began life in the 4th century when Metz was an important Gallo-Roman city [1]. In the 7th century, the structure was converted into a church, becoming the chapel of a Benedictine nunnery [1]. A new nave was constructed in the 11th century with further interior renovations [1]. The building became a warehouse, and remained so after being declared a historical monument in 1909 [1].