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9 of the world's most extreme streets

By: John Donovan on March 29, 2016, 11:46 a.m.
Pan-American Highway cuts through the Nazca Plateau

Photo: terekhov igor/Shutterstock

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The longest: The Pan-American Highway

The Pan-American Highway winds some 20,000 miles through 17 countries, from the tip of North America in a small town in Alaska to the tip of South America in a small town in Tierra del Fuego, Argentina. It even cuts through the Nazca Plateua, as shown here.

A 90-mile break (the Darién Gap) in Panama stops the highway from being nonstop. Otherwise, it's clear sailing through high mountains, deserts, rain forests and a lot of asphalt.