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 the former Franciscan monastery was built probably between 1515 and 1520. It is located in the UNESCO World Heritage Site of Old Rauma. The church stands by the small stream of Raumanjoki (Rauma river).
The exact age of the Church of the Holy Cross is unknown, but it was built to serve as the monastery church of the Rauma Franciscan Friary. The monastery had been established in the early 15th century and a wooden church was built on this location around the year 1420.
The Church of the Holy Cross served the monastery until 1538, when it was abandoned for a hundred years as the Franciscan friary was disbanded in the Swedish Reformation. The church was re-established as a Lutheran church in 1640, when the nearby Church of the Holy Trinity was destroyed by fire.
The choir of the two-aisle grey granite church features medieval murals and frescoes. The white steeple of the church was built in 1816 and has served as a landmark for seafarers.