From 1925 the chateau was known as the Grimaldi Museum. In 1946 it was the home for six months of the artist Pablo Picasso. Today the museum is known as the Picasso Museum, the first museum in the world to be dedicated to the artist.
Picasso himself donated works to the museum, most notably his paintings "The Goat" and "La Joie de Vivre". In 1990 Jacqueline Picasso bequested many works by Picasso to the museum. These included 4 paintings, 10 drawings, 2 ceramics and 6 etchings. These are displayed at the Château in addition to the 3 works on paper, 60 etchings and 6 carpets by Pablo Picasso which the museum collected between 1952 and 2001. Today the collection totals 245 works by Picasso.