The open-air Eco museum is a route consisting of 14 stations and 47 stops to discover Leonardo’s footprints left in the area. The boundaries of the Eco museum, to be visited on foot or by bicycle, are: to the north the ferry, that connects Imbersago to Villa d’Adda, to the south the Rudun at Groppello.
Along the nature path there is the Eco museum headquarters, the Stallazzo, converted from an old post station, where the horses that towed the barges against the current were changed. There is a refreshment area and an educational exhibition. Near the Stallazzo, a stairway leads to the Sanctuary of the Rocchetta, built at the end of the 14th century overlooking the Adda River. In the vicinity is the locality of Tre Corni, whose wild scenery inspired Leonardo for the landscape of the “Virgin of the Rocks”.