They do documentaries that discuss the history of extinct theme park and themed entertainment experiences. My favorite has been Disney Channel's Theme: A History Mystery. It was surprisingly moving.
If YouTube has master craftsmen, Defunctland (Kevin Perjurer) is one. Specifically for the Jim Henson series. It could literally be an HBO docuseries, it's so good. WOW. I actually wept at the end.
Really good short docs (around 30min-1hr) on YouTube about Southern Californian history. My favs are “Tiki Bars and Their Hollywood Origins” and “Fantasyland.”
here are some favorites off the top of my head.. Zabardast: i'm partial to climbing/expedition docs, but this one is especially good. a travel diary of a group of voyagers exploring the remote lands of Pakistan to freeride ski down its mountains. Night Fog: very heartbreaking look at WWII concentration camps Dark Days: documents the lives of the homeless people living in the tunnels underneath New York City, without being intrusive or voyeuristic Don't Look Back: self-explanatory (Minnesota's sweetheart)