In the center of Turin still circulate old tram, carrying passengers on traditional lines; as normal public transport, you can take them without extra charge, for a fascinating tour of the historical buildings in the center of Turin. For example this could be a good idea to spend a rainy day!
Historic Tram nr. 7 (NOTE: only on Saturday and Sunday)
It starts and ends in Piazza Castello.
Tram nr. 13 (everyday)
It starts from Piazza Vittorio Veneto and comes in square statute (and vice versa)