Basilica of Saint-Pierre-aux-Nonnains
Construção
The basilica of Saint-Pierre-aux-Nonnains is a pre-medieval church building in Metz, France. It began life as a Roman "gymnasium", or secondary school, in the 4th century AD, making it one of the oldest churches in Europe.The building was originally built in 380 AD as part of a Roman spa complex. In the 7th century, the structure was converted into a church, becoming the chapel of a Benedictine nunnery.