3. China and Nepal

Border: Mount Everest
Area: Over 1,414 km* long
Est. Gross Domestic Product: $46.097 billion (Nepal) / $17.52 trillion (China)*
One of the world’s highest international borders, it spans the peak of Everest and reaches incredible heights. Nepal and China share this boundary. This natural border, which rises to a height of almost 29,000 feet, not only divides two countries but also brings them together in the Himalayas’ magnificent magnificence.

China and Nepal ©Urusa Sharma/Microsoft
The Friendship Highway, which runs from the border to Lhasa, the capital of Tibet, is a representation of the mix of solidarity and difficulty that this border offers. Because of the harsh weather and difficult ascent, there aren’t many people on Everest, but even so, the mountain’s summit is a remarkable example of both the power of nature and human aspiration, making it a particularly breathtaking boundary.