A very large church for this small town, which only has around 600 inhabitants.
Unfortunately the church was locked.
At the back I saw smashed, painted glass windows.
If you look halfway up the tower, you can see empty niches where the figures of saints are missing.
The Notre-Dame church, in flamboyant Gothic style, was built in the 15th and 16th centuries by the Ulmes and Beaujeu families, entirely vaulted. Note: a chill. It is in a fairly elegant ogival style, with three naves, from the 16th century. Its length in work is 44.40 m; its nave width of 13.35 m; the width of the sanctuary is 6.66 m; the general height of the vault, 11.90 m. Thirteen stained glass windows, representing scenes from the Old and New Testaments, or saints (including Saint Nicholas and Saint Edward the Confessor), are arranged around the main altar.
Wikipedia: fr.wikipedia.org/wiki/Ouanne_(Yonne)