Mandelieu-la-Napoule is a commune in the Alpes-Maritimes département in France, located on the French Riviera just to the southwest of Cannes and northeast of Théoule-sur-Mer. It is known for the Chateau of La Napoule, a fortified castle of the 14th century. In the 20th century, Henry and Marie Clews, a couple from a wealthy New York banking family, renovated the castle, which they then inhabited. Henry was a painter and sculptor whose work still fills the castle, which is now run as a non-profit arts foundation by his descendents. The population of Mandelieu-la-Napoule is less than 20,000.