The Saint-Aignan church you saw in the photos I posted yesterday was built in the 11th and 12th centuries on top of an even older church or chapel built in about the 6th century. That smaller building became the crypt of the newer church. Murals were painted on its interior walls between the 12th and 15th centuries. Here are some photos of them. I'm posting them at a very large size so you can see more detail. Click or tap on them to enlarge the view.