One player review says:
This Collector's Edition has 15 Wallpapers, 20 Concept Art pictures, 5 Music Soundtracks, 10 replayable Movie Videos, 30 Achievements to earn, 12 Cursed Paintings, 15 Morphing Objects, 64 Collectible Brushes to buy 12 Animal paintings in the Menagerie, 19 replayable Hidden Object Scenes, 19 replayable Mini Games, a built in Strategy Guide and a Bonus Chapter, enjoy!
I'm sure there's a map. And Domini Games are always loaded with lots of collectibles and extra things to find.