Chateau Ephemere, Carrieres-sous-Poissy
- Also Known As: Chateau Saint-Louis-de-Poissy
- Also Known As: Chateau Vanderbilt
- Address: 2 Chemin des Grandes Terres
- Vicinity: 470 Ave W K Vanderbilt
Chateau Ephemere was built for American millionaires William and Anne Vanderbilt as a residence while pursuing their passion for thoroughbred racing. Designed by Henri Guillaume, French workers were happy when the Vanderbilts created hundreds of jobs and provided a school, but were amazed when Vanderbilts supplied temporary wooden structures to protect them from rough weather during construction. - AsNotedIn