History, politics, and demographics have helped to shape the international borders that separate countries around the world.
While some boundaries simply consist of markings on a road, in areas of political turmoil borders are marked by high fences and heavily guarded gates.
From the USA-Canada border, which spans over 5,000 miles, to satellite images that capture the brightly lit border of India and Pakistan at night, here is a glimpse at some of the most striking international borders around the world.
SEE ALSO: 18 rare color photographs of the Russian Empire from over 100 years ago
This NASA satellite image depicts the border between Haiti, which is much more arid, on the left, and the Dominican Republic, which is greener, on the right.
This photo of the border between Israel and Egypt was taken by the International Space Station. The border is said to be one of the few that is so visible from space.
The Bering Strait separates the Seward Peninsula of Alaska to the east and Chukotskiy Poluostrov of Siberia to the west. The boundary between the US and Russia lies between the Big and Little Diomede Islands, visible in the middle of the photo here.
See the rest of the story at Business Insider