The Church of Saint-Nizier name refers to Nicetius of Lyon, a bishop of the city during the 6th century. The first religious building on the site of the present church was a Roman monument, perhaps a temple of Attis, whose worship was probably the cause of the Christian persecution in Lyon from 177. In the 5th century, according to tradition, Eucherius of Lyon, 19th bishop of Lyon, built on the ruins of the building a basilica to contain the relics of the martyrs in Lyon, tortured in 177. In the 6th century, the bishops were buried in the church, particularly Nicetius of Lyon, the 28th bishop. The body of the latter attracted a crowd and his presumed great miracles led the church to take his name.
In the early 8th century, the church has been ravaged by the Saracens and by Charles Martel. It was rebuilt in the 9th century, at the behest of the bishop Leidrade. Peter Waldo, in the 13th century, was a parishioner. His disciples, shocked by the wealth of the church, even set fire in 1253.
From the 14th century to the late 16th century, the church was gradually rebuilt. In 1562, the notables gathered in the church, and in the 17th century, the aldermen were elected in the nave. It suffered the damage caused by several bands of Huguenot, which plundered the bishops of Lyon's tombs, then those of the French Revolution.
After the French Revolution, the church served as flour warehouse. In the late 18th century, the project to transform the church into a gallery was abandoned after a petition signed by 100 notables.
The sacristy was built in 1816, and the organ was installed in 1886.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.