Saint-Cloud (săN-klōˈ) [key], town (1990 est. pop. 28,673), Hauts-de-Seine dept., N central France, a suburb W of Paris on the Seine River. It is a residential town and resort, with a famous racetrack. Aeronautic and radio equipment, motors, and cosmetics are produced. The headquarters of the International Bureau of Weights and Measures and of Interpol are there. The town was named after Clodoald (or Cloud), grandson of Clovis I. The palace of Saint-Cloud (built 1572; destroyed during the Franco-Prussian War in 1870), of which the picturesque park remains, was a residence of many rulers of France. Napoleon I proclaimed the Empire at Saint-Cloud in 1804.