Ferry to one of the islands of Lake Trasimeno
I visited the Isle Maggoire, which was about a 15 minute boat ride from Passignano. A quiant island that actually is not very commercialized. Very isolated with hardly any tourists. There is a very old deserted convent that is quite unusual. I believe it's been vacant for 40 years. The hike around the island offers nice scenery and fantastic views of the islands and Lake. Check out my restaurand tip for a place to eat on the island.