GAM - Galleria Civica d'Arte Moderna e Contemporanea, with its collection of over 50,000 works including paintings, sculptures, works on paper, installations, videos, and photographs, offers its visitors art ranging from the 1800s to today by artists like Pellizza da Volpedo, Medardo Rosso, Marc Chagall, Andy Warhol, and many others. Besides the collections, it also hosts major exhibitions on Italian and international artists as well as contemporary research. This guided tour traces the history of 20th-century art from the historic avant-gardes to the Informal, from New Dada and Pop Art to Arte Povera through the treasure of the city of Turin.