Explore 25 of the Most Treacherous Roads Around the World

2. Millau Viaduct, France

Soaring above the Tarn River valley, the Millau Viaduct is a masterpiece of engineering and a modern French emblem. Rising 1,125 feet into the air, it’s the tallest bridge in the world, with sleek pylons piercing the sky. The view is mesmerizing, but for those with a fear of heights, crossing it can be a nerve-wracking ordeal. Suspended above the earth with only a narrow road beneath and endless sky surrounding you, it’s both awe-inspiring and intimidating.