Inthe following sentence _"una lista degli alberghi, ristoranti, musei, e monumenti famosi."_ all the nouns are masculine plural. What if some of them were feminine, would it be necessary to use delle form them?

Hi Wasmauria, you could say both versions: "una lista degli alberghi, pizzerie, musei, e monumenti famosi." (pizzerie= plural of pizzeria-pizza restaurant) or "una lista degli alberghi, delle pizzerie, dei musei, e dei monumenti famosi." I hope this helps :)