A vignette is an illustration in which the world view is compactly organized like a small diorama. It's characterized by the compact depiction of people and backgrounds in a composition that looks as if a portion of the scene has been cut out in three dimensions. Some of them are so elaborately detailed or have such unique ideas that you just want to spend the time taking in everything.
Madolche Puddingcess and Madolche Magileine (from the Yu-Gi-Oh trading card game) are denizens of a world full of sweetness.
Have a look at the various worlds depicted in the illustrations below and see how many details you catch.