Origami Planes and White Marble Horse from France

I received this postcard from France and have absolutely no clue about the place.

The postcard was sent by Didier Roux from France.

Two pretty amazing stamps were used on the postcard.

• The top one is a machine stamp showing 3 different paper planes made by Origami. It is an airmail stamp from France (circa 2002). In France, stamp machines (machine which delivers computer stamps) deliver a small bill (size of a stamp) with a origami plane.
• The second stamp shows a beautiful white horse. It is one of the Horses 12v s-a in Booklet. There are two writings on the stamp. After a little research, they are as: "Lettre Verte" meaning "Green Letter" and the second writing says, "Le Boulonnais" meaning "The Boulonnais", which is a breed of horse, also known as "White Marble Horse", and just by the first look at the horse, it is definitely a white marble horse.

Does anyone reading this knows which place is shown on the postcard???