Marseille

 This postcard was sent by Martine

Fort du Château, Briançon

 I received this postcard as being part of the fortifications of Vauban, but after some research I learnt that only the powder magazine of this fortification is registered on the UNESCO World Heritage List, so I decided not to include it in my UNESCO collection. But still, a great postcard.

Cabanes Tchanquées, Arcachon Bay

 I also bought this postcard in gas station

Puy de Dôme

This postcard was also bought in a gas station and I'm glad I did it because a few years later these volcanoes were inscribed as World Heritage!

Dune of Pilat

 This is a postcard that I bougt in a gas station in France but I was never in this dune

Lascaux Caves

 I think the caves are not very far from where we were but we didn't visit it

Lascaux Caves

 I had the chance to find postcards of the Lascaux Caves in Périgueux