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The Musée Moissan is a museum dedicated to Henri Moissan (1852–1907), winner of the 1906 Nobel Prize in Chemistry. It is maintained by the Université René Descartes-Paris 5 faculty of pharmaceutical and biological sciences, and located in the 6th arrondissement of Paris at 4, avenue de l'Observatoire, Paris, France.

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.

The École nationale de la France d'outre-mer (ENFOM; French for "National School of Overseas France") was a French grande école, providing training for future colonial administrators. It was situated in Paris, avenue de l'Observatoire, 2.Created under the name École coloniale ("Colonial School") in 1889, it succeeded the École cambodgienne ("Cambodian School") – established in 1885 – and took the ENFOM name in 1934 (it was still referred to as La Colo in colloquial terms).