The Musée La Piscine (the Swimming Pool Museum) located in the city of Roubaix in France has a good collections of ceramics by Picasso.
Picasso made many ceramics when he lived in the South of France, in Vallauris from 1948 to 1955. To this day, Vallauris has many artists working with ceramics.
Musée La Piscine
23 Rue de l'Espérance, 59100 Roubaix, France
Musée La Piscine website http://www.roubaix-lapiscine.com/