Hôtel Gabriel, Historical private mansion in Lorient, France.

The Hôtel Gabriel consists of two symmetrical classical pavilions built from 1740 to 1742, facing each other across a main courtyard, with a two-hectare French garden to the south and a parade ground to the north. An iron lance gate joins the pavilions; two cannons flank the portal, one cast at Douai in 1751, the other taken at San Juan de Ulúa in 1838. The garden is crossed by a north–south axis around a circular water basin.

The mansion was built between 1733 and 1742 by architect Jacques Gabriel and initially served as an auction house for the Compagnie Perpetuelle des Indes. Its construction occurred during a period when Lorient was establishing itself as a major trading center for colonial commerce.

Since 2014 the ground floor of the west wing has housed the exhibition gallery "Le Lieu", alongside the municipal archives installed there in 2010. The site is also used for the Festival Interceltique de Lorient and the National Bagadoù Championship, when Breton pipe bands compete in the courtyard.

Located in the Peristyle district, the mansion welcomes researchers and visitors interested in exploring local historical records and architectural heritage. Check opening hours and access requirements before your visit, as its use as an archive may have certain restrictions.

The two cannons flanking the entrance gate differ in origin: the one cast in 1751 at the Douai foundry dates from Louis XV's reign, while the other was taken from San Juan de Ulúa in 1838 during the Pastry War. The gate itself is a grille of iron lances joining the two pavilions.