About 15 Km from Feltre is the Corlo Lake, in the locality of Arsiè, a renowned artificial basin which is very suggestive for its shape and its beautiful green waters.
It is possible to take a walk along its banks, there are some uphill stretches but it is also possible for children, I recommend leaving the car at Il Mondo di Fortunato, where on your return you can refresh yourself or rest in the lawn by the lake or even better to take a nice bath in its cool waters.
Possibility of renting a boat and canoes. Beautiful is also the route to do with bicycles from Feltre to Arsiè along a low-traffic road, about 20 km.