It's located in the center of Turin and the building used to be the house of a family of Princes which then was briefly used as the House of Deputies. The museum has almost 30 rooms which go across the different moments of the modern Italian history until after the unification. If you like history you will value all the art, weapons, clothes, manuscripts shown in the different exhibition rooms. It even has the first written Italian hymn (Mameli). If you don't want to pay for the audio tour, in each room you have a set of paper boards with a description of the history in it. Very nice museum and it won't take too long to visit.