Hôtel Donon, Private mansion in Le Marais, Paris, France.

Hôtel Donon is a private residence in the Marais district on rue Elzévir, featuring a rectangular courtyard with two extending wings. The building displays Renaissance architecture with multiple underground levels and upper floors arranged around the central court.

Médéric de Donon, lord of Châtres-en-Brie and Loribeau and controller-general of the king's buildings, acquired plots from 1575 to build his mansion; the architect is unknown, though Donon himself or Jean Bullant may have had a hand. A supporter of Henri III, he was imprisoned in the Bastille by the Catholic League in 1588 and released in July 1593, dying in the house in 1594. The financier Jean-Louis Le Mairat bought it in 1640, and the city of Paris purchased it in 1974.

The mansion now houses the Cognacq-Jay Museum, displaying an important collection of eighteenth-century paintings and decorative arts. Visitors can observe how wealthy Parisians lived and what objects they valued during that era.

The mansion is centrally located in the Marais and accessible by nearby metro stations throughout the district. Visitors should note that museum hours and exhibitions can vary by season, so checking ahead is advisable.

The great attic roof, used as an exhibition space, is compared in the sources to the hull of an overturned ship. The facade's window rhythm is half-cross, cross, cross, half-cross, and the carved consoles under the roofline were left bare, with only simple mouldings around the dormers.