Susa
While staying in Turin, I also made a short trip to Susa, a town located towards the border with France. Susa is right below the mountains so it was a nice change of scenery from the city. During Roman and medieval times, the town was the main entry point into Italy from France and still has many ancient historical buildings.
I went there early in the morning, taking one of the frequent trains running from Porta Nuova in Turin, and strolled around for a few hours.