Dedicated to "romagnolo" by Leonardo da Vinci aims to illustrate the characteristics of the territory and its traditions through observations and analyses of this extraordinary man of genius. It is divided into two sections: an ethnographic and scientific. The first documenta, through the exhibition of copies of manuscripts anastatic, studies, drawings and notes, the analysis about physical aspects, mechanics and hydraulics, performed by Leonardo during his stay in Romagna. The second presents the studies on the uses and customs of the romagnola tradition from the 16th century, with particular reference to the theme of water, sound and nature. Here we report the presence of models and images of the "concavity" made in the Park San Donato.