This could be really niche and I could be barking up the wrong tree, but I love videos of members of the public touring historical sites, especially stately homes, and telling the stories about them. There is something about the amateurness of the video which makes me feel like I am discovering secrets. I just watched a few on Hampton Court Palace, The London Dungeon, Pompeii.
I am interested in any other historical sites or stately homes people have made videos about.