This story is about vines trained against walls, and Chasselas table grape.
One of things people rarely know is that the Paris region was the #1 wine region in France before the Phylloxera era.
Another little-known story is the vines-against-walls that were grown intensively in Thomery since the 18th century. This village, which lies along the winding Seine river, 75 km east of Paris near the royal city of Fontainebleau, had found a way to supply Paris with high-quality Chasselas grapes in the middle of winter, and this, for more than 200 years.... See this aerial view on the right and try to visualize how the tightly-packed alignments of walls looked like without the houses, most of them having been built recently. By 1835 already, Loudon's "Encyclopedia of Gardening" referred to Thomery's Chasselas and to its peculiar training system. Read this page [word] from his book (thomery is evoked in the second half of the text).
We know that Thomery's wine was a favorite of the king François 1st in the first half of the 16th century. That's why his winery ("les Pressoirs du Roy") was built here. Then, later, in 1730, after table-grape vines from the southern city of Cahors were planted and trained against a 1200 meter-long wall on the Fontainebleau Chateau's grounds, someone named Francois Charmeux, after noticing the excellent ripening effect of this walled training system, began to build parallel walls in nearby Thomery and to plant vines against them. The idea was to grow high quality Chasselas grapes and sell them in Paris, a night boat-ride from there, then.
The village admistration is looking for ways to show the walls to the visitors from a vantage point of view, like a Ferris wheel maybe...