Castelmoron-d'Albret (; ) is a commune in the Gironde department in Nouvelle-Aquitaine in south-western France. It is notable for being the smallest commune in France by size, with an area of just , roughly the size of the Place Charles de Gaulle in Paris. By comparison, the largest commune in metropolitan France is Arles, with an area of . It is the smallest Commune in France, and is smaller than the nations of Monaco and Vatican City. Population See also Communes of the Gironde department References Communes of Gironde