Lumière ! L'aventure commence

Others have explained the details so let's just say this : 1/ this is a collection of some of the first movies ever seen on a big screen, cinema being invented right in front of your eyes (first film that's been projected in a movie theater (or what would pass for a movie theater at the time), first travelling camera, first special effects, first everything !

And 2/ what you can see right in front of your eyes is the real 19th century (even when it's shot in 1905. The first years of the 20th century were not very different from the last ones of the 19th). Not a recreation. It's the real thing. People, clothes, technology, transportation, everything. And just for that, it's priceless. And a bit unsettling when you realize that people at the time were not that different from people of today (Like that woman in London waving at the camera or those kids in Jerusalem making fools of themselves because they know they are filmed. Cinema is just a few months old and they already behave like it's been in their life forever).

And don't miss the reel with the vietnamese kids running after the camera, it's lovely.

(Some say that you can see these reels on youtube. It's true, but the image quality on the bluray is much, much better).