Civita de Bagnoregio is an Italian hilltop village, which is often featured in Calendars and collections of beautiful geographic locations

The Map on it’s wikipedia site https://en.wikipedia.org/wiki/Civita_di_Bagnoregio is a great reference for the towns along the Via Franchegena (it can be enlarged and reduced to reveal details of every town)
By the way, the “via” is over a 3 hour walk (15km) away from Bolsena

https://www.google.com/search?client=firefox-b-1-d&q=civta+de+bagnoregio+iltaly