Albi is a spectacular place to visit. The cathedral is special as it is not a gothic building, as i know it. In southern France, the cathedrals are often built with the supporting structures inside the walls instead of outside, as for instance Chartres.
The formal gardens of Berbie palace must be seen. We can not approach them free but we se them from above from backside of Berbie palace.
I overheard a guide telling her audience "It all coms from the river". The clay to make brick and all of the "round/oval" small stones that are in the buildings and as road surface.
Out of aspect "what you see is what you get", Albi is better than many WHS.