DW tv is broadcasting an English version of a short documentary about the rise of cathedrals in Germany during the Romanesque period - it played in February in German but is now making the rounds in English; see the schedule listed on the program page here:
https://www.dw.com/en/contest-of-the-cathedrals-the-romanesque/a-56674832
It's worthy of listing here on the RS forum where it conforms with Rick's production standard of 'assuming an attention span' without going into too many minutiae for the general traveler.
It's best for getting thumbnail of the Church in Germany on either side of the Millennium and for some great images of the cathedrals of Mainz, Worms, and other cities.
Caution, though, should be taken when it comes to anything the narration claims apart from simple dates and facts -- almost everything the show claims is doubted or disconfirmed by current scholarship. (It seems like the writers didn't consult anyone from a modern nondenominational academy when putting together the script). It looks marvelous, though, so worth your time.