Hôtel de Mondragon, 18th-century private mansion in rue d'Antin, Paris, France

Hôtel de Mondragon is a light tan stone mansion at 3 rue d'Antin, built between 1715 and 1723. Its facade has tall rectangular windows with white frames and metal balcony railings, divided by horizontal bands, with a large arched entrance flanked by two barred windows. Two plaques reading "BANQUE DE PARIS ET DES PAYS-BAS" are mounted on the wall.

The building was constructed between 1715 and 1723 for Pierre Etienne Bourgeois de Boynes, a treasurer of the Royal Bank. It later served as the town hall of the 2nd district before being officially registered as a historical monument in 1926.

The bank president's office occupies the room where Napoleon and Josephine's marriage was celebrated. Its rocaille decor includes white woodwork highlighted in gold, stuccoes of the elements alternating with overdoor panels painted by Noël Coypel and Sébastien II Le Clerc, a bust of Josephine by Chinard and a copy of the 1829 marriage certificate, the original having burned in 1871.

The building is registered as a historical monument and currently houses the headquarters of BNP Paribas. It is not open to the general public, but the facade and entrance portal can be admired from the street on rue d'Antin.

The two plaques on the facade mark the civil marriage of Napoleon Bonaparte and Josephine de Beauharnais, held here on 9 March 1796 while the building was the 2nd arrondissement town hall; Barras, Tallien, Calmelet and Le Marois were the witnesses. The bank president's office occupies that same salon, where a bust of Josephine by Chinard and an 1829 copy of the marriage certificate are kept, the original having burned in 1871.