Where was Doctor and the Healer filmed?

1957 film by Mario Monicelli

Doctor and the Healer (1957) was filmed in Viterbo, Valentano, Albano di Lucania, Civita di Bagnoregio, San Martino al Cimino and Grotte Santo Stefano, 6 places named in its Italian Wikipedia’s Riprese section, in Italy. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data