Spending one day in both Orvieto and Montepulciano. Would like to find a 2hr or less walking tour. We don’t need to have a tour that includes wineries.
We enjoyed this tour a few years ago http://www.orvietounderground.it/index.php/en/.
I also enjoyed the underground tour. It was a number of years ago;; I don't remember it is was the same one Laurel recommended. In addition to being interesting, it had the benefit of being out of the heat on a hot day.
I took the Orvieto walking tour offered by the tourist office back in 2015 and liked it. The T.O. is always the first place I check.
Orvieto is beautiful! Here are some 1-2 hours tours of Orvieto to consider:
https://www.orvietoviva.com/en/orvieto-tours/#2h