Saint-Lazare Collegiate Church of Avallon

Now enter the church covered by ribbed vaults whose particularity is to end in the shape of a dome
This is composed of a central nave flanked by two side aisles. You will notice the difference in level of almost 3 meters between the portal and the choir. The height of the pillars as well as the cord which surmounts them follow, like the floor of the church, the slope of the rocky spur on which it is built.
The current organ was built in 1850 by the Grenoble maker Nicolas Chambry, in a classical style from the 16th and 18th centuries. At the same time, a new musical universe is emerging for organists and Avallon is joining in...
When you leave, don't forget to go to the apse of the Collegiate Church to admire the Romanesque cornices whose sculpted modillions (sculpted architectural element supporting a cornice) are interesting.

Source: “The Frog Circuit”

This church (formerly a monastery church) is a must in Avalon - even the Pope was present at the inauguration.
Despite being destroyed several times, the portal of the church is well worth seeing.
If you explore Avallon on the "Tracks of the Frog", the church is right after the tourist information, where you can get flyers for the frog tour for 2 euros (recommended).