Hôtel de Pomereu, Private mansion in 7th arrondissement, France

Hôtel de Pomereu is a Louis XV-style private mansion at 63–67 Rue de Lille and 10 Rue de Poitiers, rebuilt in 1872–1874 by architect David de Pénanrun. Its pale beige stone facade has a projecting central bay with a tall arched green door under a carved crest, and a mansard roof with dormers; steps flanked by two white stone lions lead to the entrance.

The site held two Louis XV-era mansions, Hôtel de Maillebois and Hôtel Duret. Maillebois burned during the Commune in 1871; Armand de Pomereu d'Aligre, owner of Duret, bought the remains and had a single building erected from 1872 to 1874 by David de Pénanrun, a pupil of Victor Baltard, in Louis XV style. Sold in 1947 to the Caisse des dépôts et consignations, it became offices and reception rooms from 1967.

Since 1947 the mansion has belonged to the Caisse des dépôts et consignations, which uses it for offices and reception rooms. It hosted the founding of the Fondation de France in 1969 and the preparatory seminar for the 1989 G8 summit known as the Sommet de l'Arche. The building opens to visitors during the European Heritage Days.

The building is normally closed to visitors but opens to the public during European Heritage Days in September. It is worth checking ahead if you wish to see the interior spaces.

The staircase is classified as a monument historique, while other rooms were inscribed by an arrêté of 14 December 1979. The mansion hosted the founding of the Fondation de France in 1969 and the preparatory seminar for the 15th G8 summit, the "sommet de l'Arche", in 1989.