Hôtel de la Guerre - Credit: Wikimedia Commons
The Hôtel de la Guerre (literally the 'Hotel of the War') also known as Carnot Barracks is the name of a building located at 3, Rue de l'Indépendance-Américaine in Versailles, built near the Palace of Versailles. The building was built in 1760 by Jean-Baptiste Berthier, father to the later famed Marshal Louis-Alexandre Berthier, to bring together the different war offices into one central location (until then, they had been dispersed in Paris, notably at the Bastille and Hôtel de Ville). The building was one of the first buildings built in France which was designed to be 'fire proof' and 'limited the risks of a fire'. The building currently houses the Central Directorate of the Defence Infrastructure Service, part of the French Army. Read more on Wikipedia
Source: en.wikipedia.org