World within worlds. Could be the main world and these bubbles are portals to other places or worlds. The city of the Origionals and they slowly migrated through the bubbles until few were left or could find a ways back.
Land 3 Fantasy Landscapes & Scenery -this counts as fine art right? this isnt from a video game or anything. i have no idea what this is supposed to be but i like it. i always like green, so an artwork with 800 different types of green gets my attention.