Almost a century ago the English writer Ella Noyes defined Casentino "a closed valley", due to its geographical conformation. It is likely that the idea of closed, therefore reserved and secret, has contributed to picture a personal image of Casentino in my mind, but with reference to the natural, architectural and artistic treasures of this area. I see this part of Tuscany as an old, non-showy "casket", but so full of precious things that it is impossible to close it completely. Thus, from wherever you look at it, a "jewel" appears through the half-open cover: the Castle of Poppi. But this is nothing but a sign, an invitation to approach. By putting your eyes near the opening, you can catch a glimpse of other castles and suggestive landscape views. But it is not enough, you need to snoop, to look carefully through in that "casket". Going back to a medieval atmosphere, we can discover parishes, castles, characteristic villages, beautiful squares and places of great spiritual value as Camaldoli, La Verna and Santa Maria del Sasso in Bibbiena. There are also numerous, precious, pictorial art works, belonging generally to the late medieval period, almost totally located inside churches. Ancient traditions, folk events and old crafts are still present in the social life. All this is surrounded by a beautiful and nearly uncontaminated nature as the chain of the Massiccio del Pratomagno and the National Park of the Casentino Forests.