This is both spectacular and incredibly eerie, almost creepy. A video for an epic 8 minute song by the lovely Fleet Foxes. I thought I recognised the illustration style as Stacey Rozich, and a little look at the credits over here reveals my assumption to be correct. I like the change of tone in the middle, you should see what I mean.
I recommend watching full screen with the volume turned up. Although it may freak you out a little bit. Or maybe that's just me?