Vecchi e Nuovi Mondi is a bookshop located in the historical centre of Torino.
I was warmly welcomed by the very friendly two owners, and then I soon lost myself among the bookshelves.
Despite my extremely rusty Italian, the two owners took a lot of time to chat with me (it was a Babelian conversation, made of bits in Italian, French and English...).
In the end I bought two recent Italian scifi novels, one by a female writer, the other by a male writer, which, they assured me, were really good.
I would review them, were it not for the fact that I actually lent them to a colleague who teaches Italian literature and who haven't given them back yet because she likes them a lot... !
If you are Italian and in the vicinity of Torino, I'd highly recommend going there to spend all your money. If you're not in the vicinity of Torino, then catch a train and go spend your money there.
If you aren't Italian but you are visiting Torino, I'd recommend dropping by, even if you don't speak Italian. The collector shelf may probably have something for you, and it's always good to broaden your horizons by seeing what is published in another language and rarely (if at all) translated in English.