Hôtel du Châtelet

The Hôtel du Châtelet is a historic hôtel particulier located at 127, Rue de Grenelle in Paris's 7th arrondissement. Commissioned in 1770 by the Duke of Châtelet and completed in 1776, it has served various significant roles throughout history, including as a headquarters for the École nationale des ponts et chaussées and as residences for both the Turkish and Austrian embassies. After extensive renovations in the 19th century, it became the archiepiscopal residence until 1905 when it was repurposed as the Ministry of Labour's headquarters. Notably, it was the site of the Grenelle agreements in 1968, making it a landmark of both architectural and political significance in Paris.