"The Driftless Area is a rugged area of Wisconsin, Iowa, Minnesota, and a minor part of Illinois that was completely missed by glaciers. It is roughly the size of West Virginia, and is home to huge bluffs, deep canyons, and rare species of plants found no where else."
But luckily there is not such a border bs going on. All part of the eu.
Where you can move your front door if you want to move your house from one country to the other if you have a house on top of one of all the boarders crisscrossing the town/towns :)