Since 2005, the Mediaeval village of Etroubles has become an outdoor museum, a permanent art gallery exhibiting the works of world famous artists, thanks to a collaboration with the Fondation Gianadda di Martigny.

Among the Italian artists exhibiting are the painter and sculptor Salvatore Sebaste, one of the major representatives of the art of the Italian Mezzogiorno, Ferrara sculptors Alberto Gambale and Sergio Zanni, the Milanese painter, Carlo Brenna and the Florentine Andrea Granchi.
French artists include Albert Féraud, the most famous living French sculptor, Guido Magnone, and the painter Evelyne Otis Bacchi. The French section is enriched with a work of the late painter Norbert Verzotto, kindly donated by the family.
Swiss contributors include the famous Hans Erni and the sculptor Yves Dana. Lastly, the exhibition features Assaf Mekhtiev, native of Azerbaijan and resident in Aosta.
Opening and closing the exhibition are the Aosta Valley artists Giulio Schiavon, Siro Viérin, Chicco Margaroli, Franco Balan, Enrichetta Jorrioz and Roberto Priod.

In 2006 two works of the Isola d’Elba artist Italo Bolano have been introduced, while 2010 has seen the inauguration of the works of Michel Favre of Martigny and Chicco Margaroli of Aosta: these two works adorn the Emile Chanoux square, in the pedestrian area.