The museum was founded in 1982 and opened its doors in 1985 thanks to an agreement reached between Zaragoza City Council and the daughter and heir of the author's work, Pierrette Anguera. It is located in the palace of the Counts of Argillo, a late Renaissance building dating from 1661. The palace has an open central courtyard and a first floor with an interior gallery and several rooms where the most important part of the exhibition takes place.

At the beginning of 2007, the museum housed 177 works by the sculptor, including drawings, cartoons and sculptures, as well as numerous documents. Among the pieces on display are The Prophet, located in the inner courtyard, and the two equestrian groups created for the Olympic Stadium in Barcelona in 1929, known as the Olympic Salute, which greets the visitor from the Plaza San Felipe.

In February 2007 the museum was temporarily closed for major refurbishment work, which increased the usable exhibition space by 40% by adding a new building to the museum. The work, with a budget of 3.7 million euros, was commissioned to the architect Ángel Peropadre. The reinauguration was held on 21 October 2009.