Bracciano is only a ten minute train ride from Manziana, and it is home of "one of the most impressive castles in Italy, Europe and the world." People travel from all over Italy to take in one of the few renaissance castles in the country that is open to the public.
We can't possibly recommend Rome enough! It is a 45 minute drive or two hour train ride from Manziana, but highly worth it if you have the time. Reach out to Sofia or Michael for some of our favorite Rome spots if you plan to make the trip.