Hôtel Mezzara, Art Nouveau private mansion in Auteuil, France

Hôtel Mezzara is a brick and millstone mansion at 60 rue Jean de la Fontaine, built by Hector Guimard in 1910–1911. Its asymmetric facade has a central bay with two stacked loggias, cast-iron balconies and a gate grille decorated with bramble motifs. Inside, a large hall with a zenithal glass roof and a staircase with Art Nouveau railings leads to rooms; the dining room keeps Guimard's original buffet, table and chairs and a pointillist canvas by Charlotte Chauchet-Guilleré.

Hector Guimard built this Art Nouveau mansion in 1910-1911 for Paul Mezzara, a Venetian-born textile industrialist and lace maker who was vice-president of the Société des artistes décorateurs, the circle through which the two men met. Mezzara used the house as a showcase and sales venue for his fabrics but lived there only two years. Sold in 1930 to the Lacascade sisters, it became a private school, passed to the Ministry of Education in 1956 as an annex of the Lycée Jean-Zay, was listed in 1994 and classified in 2016, and is to become the Musée Guimard.

The mansion showcases French Art Nouveau through the integration of architecture with craftsmanship, from custom furniture to stained glass windows. This unity touches every room and shows how artisans and architects worked together during this period.

The building sits on Rue Jean de la Fontaine in the 16th arrondissement of Paris and can only be visited by prior arrangement. Visitors should check ahead and book a time since it remains a private residence with protected status.

The building retains original ironwork with flowing forms and decorative stonework, all crafted from Guimard's designs. These self-created details make it rare because one architect controlled the entire artistic vision from large to small elements.