I have recently gotten my sons involved in D&D.  As a newly minted Dungeon Master with a full time job, it's tough to be able to construct new maps/locations for our quests.  This allows me to toss together many different scenes in a little amount of time.  Each tile is mad of sturdy cardboard with semi-gloss printing, much like a cardboard puzzle.  They are two-sided, so one side might be a road, the other a grassy knoll.  I could see having a few more of these for larger campaigns.