While border crossings for many may conjure up images of long lines, passport control, and sterile concrete buildings, not every perimeter is created equal. Some nations are divided by beautiful, natural sites, such as Niagara Falls, while others have created monuments to celebrate the meeting of the nations.
Throughout this gallery, you'll see borders marked by natural wonders, feats of engineering, and symbols of unity. Click through to explore some of the most beautiful and unique borders in the world.