Border barrier

Such barriers are typically constructed for border control purposes such as curbing illegal immigration, human trafficking, and smuggling.

[1][2] Some such barriers are constructed for defence or security reasons.

In cases of a disputed or unclear border, erecting a barrier can serve as a de facto unilateral consolidation of a territorial claim that can supersede formal delimitation.

The construction of border barriers increased in the early 2000s; half of all the border barriers built since World War II, which ended in 1945, were built after 2000.

Note: The table can be sorted alphabetically or chronologically using the icon.

Mexico–United States barrier in California
Israeli West Bank barrier
Map of the Roman Empire , along with locations of limes
The extent of the Ming dynasty and its walls, which formed most of what is called the Great Wall of China today
Berlin Wall , 1988.