The Musée Bonnat-Helleu is an art museum in Bayonne, Nouvelle-Aquitaine, France. The museum was created in 1901 when Bayonne-born painter Léon Bonnat gave his extensive personal collections of art – notably an exceptional drawing collection – as well as many of his paintings to the City of Bayonne. Subsequent donors enriched the collections of the Bonnat Museum with major gifts in 1936, 1989, 1997 and 2010, making its holdings one of the largest collections of art in southern France.
The "Helleu" in its name refers to Paul César Helleu. The museum owns 181 works by Helleu, from a gift in 1989 and then a legacy in 2010 from Paulette Howard-Johnston, daughter of Helleu, and a legacy in 1997 from Ghislaine de Kermaingant.
The Museum has been closed to the public for extensive renovation since April 2011. An architectural project intended to double the size of the museum will begin in early 2018, with the objective of opening the museum at the end of 2019. [source]