The churches
On this website, I use the classification of the book by Grandpierre and Lecomte to sort the churches into different regions
Aisne - Valley of the River Oise
There are 18 churches in the Valley of the River Oise in the Départment Aisne
Aisne - Valley of the River Serre
There are 22 churches in the Valley of the River Serre in the Départment Aisne
Aisne - Around Vervins
There are 25 churches around Vervins in the Départment Aisne
Département Ardennes
There are 14 churches in the Départment Ardennes
Département du Nord
There are 4 churches in the Département du Nord