Geography
How Geopolitical Enclaves and Exclaves Create Logistical Puzzles
Quick fact
The village of Baarle-Hertog (Belgium) and Baarle-Nassau (Netherlands) are so intermingled that some buildings have their front door in one country and back door in the other, and residents must cross international borders dozens of times a day.
Why this is interesting
You can stand in one country, see another, but must cross a third to reach the capital of your own. How does a country function when its own land is cut off?