Igloo?

We went to the Île d'Oleron for lunch and I ate pigeon on its nest (pigeon breast on a nest of rosti potatoes. Delicious. On the way home, Mrs SoL did the driving (result of the very boozy ‘Captain’s Rum Ice Cream Sundae for dessert for me), and saw this in the Cité des Huitres. Fun way to use up the oyster shells. Extra pic is the arty version.