Usually, borders are announced only by a sign that tells you that you left one country and entered another one. However, imaginative people are everywhere and some of them decided to make borders a bit more fun.
Baarle-Nassau is a Municipality in the Netherlands. It shares an unusual border with the Belgian municipality of Baarle-Hertog. The border is so complicated that there are even some houses that are bisected by it. In the picture above you can see the Netherlands on the left and Belgium on the right.
Bir Tawil is the only piece of land in the world (outside of Antarctica) that is not claimed by any nation.
The border passes right through the town, even through some buildings and homes. In some cases, a family at home cooks its meals in one country and eats them in the other.
The District of Columbia was originally a big diamond carved out of Maryland and Virginia. Due to its size, shape and location, the border has some unusual features. When it was originally delineated, large stones were placed one mile apart around the entire District to define the border — one hundred stones in all, since the original district was ten miles long on each side.
The Korean DMZ is a strip of land about 160 miles (258 kilomters) long and 2.5 miles (4 kilometers) wide, dividing North and South Korea. It is the most heavily militarized border in the world. Because it is so heavily guarded and almost nobody ever enters it, it has inadvertently created a nature preserve.
What a lot of people don’t know about Mount Everest is that the border of Nepal and China goes right through the middle of the mountain, including the peak itself — making it not just the highest mountain, but also the highest border area.
The International Date Line passes between the Diomedes and serves also as the border between the United States and Russia. Thus, when residents on Little Diomede look across the strait at Big Diomede, they are not just looking at another country, they are “looking into tomorrow”; for example, when it is 9 AM on Saturday on Little Diomede, it is 6 AM on Sunday on Big Diomede
The Tumen is a river in Northeastern Asia. In this area, you can start off in North Korea, and just by walking North for less than half a mile, you will pass through China and end up in Russia.