Ever walked behind the library in Citta Alta and wondered what is the story behind the ancient stone walls and stairs you see through the glass doors? How old are they? Who lived back in ancient times and how? Take your chance for a free guided tour (though I am afraid italian only but it is free entrance with experts). New dates either at 16:00 or 16:30, maximum 25 people (must have been a huge amount of people the first visit) on 29th March, 26th April and 31st May. Make your appointment and call +39 035 286 070.