World's Scariest Roads

Karakoram Highway, Pakistan to China

Location: Karakoram mountain range in Pakistan

Fear factor: The highest paved road on the planet, the Karakoram Highway winds through the mountains at an altitude above 16,000, eventually connecting to China. It’s a popular tourist route, with motorists stopping to view K2 and other stratosphere-scraping peaks from the pavement. Drivers can easily suffer altitude sickness on the 800-mile highway, which slinks along rivers and crosses arid planes before climbing the endless inclines of the Karakoram.