One of the photog friends I have works on shooting panos of city sky lines that are used for the modern version of the matte paintings used to fill the windows in studio shoots. It's impressive to see them in person.
I took the extended WB back lot tour years ago, and part of the tour was through the matte painting shop. The scale is very impressive. To see artists on 12' ladders to work on it was a nice "human for scale" during the tour.
The circular/sphere real time screen backgrounds Favro at Disney/StarWars is using for The Mandolorian is also neat tech as well.