Why Pheasant Island is sometimes in France, sometimes in Spain
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Filed under: Lifestyle, Travel, Explore
On maps, international borders are two-dimensional: they can be traced out on a flat sheet of paper with latitude and longitude. In real life, terrain is three-dimensional, and borders can be as well—like Friedrichstrasse Station during the Cold War, where one could cross from West to East Berlin just by going up a flight of stairs. But there's only one four-dimensional border in the world, one that moves back and forth not in space, but in time.