In Colognora the chestnut is since ever one of the most biggest livelihood source for the peoples of the valley. Since the most ancient times the inhabitants of Colognora have exploited its wood to warm up the houses and to make furnishings, its fruit to nourish themselves and its leaves to feed their livestock.

For this reason we find here the Museum of the Chestnut. Its birth was possible thanks to the work of some volunteers, engaged in the study of the history and economy of the Valle di Roggio. They gathered the documents, which previously (from 1979 on) were exhibited in the rooms of the parish church. The discovery of a parchment (dating back to 1828), that bore witness to the presence in this resort of a chestnut wood, led the volunteers to dedicate the museum to the history of this tree. In the town of Borgo a Mozzano we find one of the most charming sightseeing of this resort: it is the Ponte della Maddalena, better known as "Ponte del Diavolo" (the Bridge of the Devil).

The bridge was built to link the two banks of the river Serchio (near the place where the stream Lima flows into it) to allow the people to reach the spa of Bagno di Corsenna, later on renamed Bagni di Lucca.

It is said that the name of the Ponte della Maddalena originates from an image of the saint, today kept in the Church of S. Jacopo di Borgo, which once stood on the left bank of the river. According to the writer Nicola Tegrini, the bridge was built on commission of the countess Matilde of Canossa, whilst Castruccio Castracani ordered it to be restored at his own expenses. According to the tradition, the bridge was on the contrary built by S. Giuliano which asked the Devil to help him, as he didn't manage to finish the highest arch. The Devil agreed to do this work, asking nevertheless for the soul of the first person crossing the bridge.