Between the medieval hilltown of Spello and the tiny village of Collepino is a path along an ancient Roman aqueduct. Park in a lot at the top of Spello, then follow signs to the aqueduct (fill up waterbottles at the cistern, you'll need that water, and it's fresh and cool). The path winds back into the hills, away from the industrial plains, until there are olive groves above and below you, and countryside sweeping out. The walk takes several hours (longer if you have a 5 year old with you), so call ahead to Taverna San Silvestro to be sure they'll be open for lunch. And know that the end of the walk is steeply uphill, and kind of exhausting (the last 15-20 minutes). Though the walk down, with a full belly, is purely relaxing. I've seen running cinghiale, porcupine quills, people picking olives, and shards of pottery my children like to imagine are ancient Roman. But mostly, it's just the feeling of walking along the aqueduct and imagining its construction by ancient Roman hands, and being surrounded by the olive groves that the Spellani are justly proud of, that create a memorable day.