Perhaps eventually they will post clips.
Parts Unknown can only be viewed if you purchase the episodes or seasons or subscribe to certain services. So ultimately when they finish their 6-episode run, they will probably make it available for sale. And if the ratings are good, maybe more seasons.
It's interesting that they filmed in summer of 2020. Americans couldn't go to Italy but I guess for a TV show that promotes Italy tourism to Americans, they made a special dispensation.
Meanwhile, this site lists the places they visit in each episode:
An episode-by-episode guide to some of the dishes host Stanley Tucci eagerly samples on-screen.
www.cnn.com
I liked the narration in the first episode, gave a lot of good history. So the "best" San Marzano tomatoes come from a relatively small strip of land near a freeway.
They note that it's grown everywhere and claimed to be San Marzano. There appears to be no certification of origin for tomatoes?
In any event, they attribute the unique balance of flavors and thin peel to the clay deposited by previous eruptions of Vesuvius.
They showed buffaloes in Italy!
Then they explained how the neapolitan pizza developed, some fat on top of bread because of poverty among other reasons. Fried pizza for hygiene because cholera had been a problem.