Châtelaillon-Plage, commonly known as Châtelaillon, is a commune in the Charente-Maritime department, administrative region of New Aquitaine, France.
It is located south of the city of La Rochelle and is also a suburb. It is twinned with Knebworth, England.
Wikipedia https://en.wikipedia.org/wiki/Châtelaillon-Plage
Official Website https://www.chatelaillonplage.fr/
Coordinates 46°4'25.908" N -1°5'25.437" E