The Fontaine de l'Observatoire is a monumental fountain located in the Jardin Marco Polo, south of the Jardin du Luxembourg in the 6th arrondissement of Paris, with sculpture by Jean-Baptiste Carpeaux. It was dedicated in 1874. It is also known as the Fontaine des Quatre-Parties-du-Monde, for the four parts of the world embodied by its female figures, or simply the Fontaine Carpeaux.