The Cau del Cargol Shells of the World Museum is a museum containing a large private collection of shells; it is situated in Vilassar de Dalt (Catalonia, Spain). The collection includes over 16,000 worldwide species of mollusc shells, from marine, terretrial and freshwater habitats. The museum was created in the year 1950, when its founder Jaume Bot i Arenas (1904-1983), started to exhibit his own collection to the public. Later he expanded his collection by acquiring other people's collections.