Stelvio Pass (Italy)

The Stelvio Pass climbs to 9,045 feet via 48 hairpin turns on the north side alone — each one numbered on stone markers as you ascend. Built in 1820-1825 by the Austrian Empire, it's the highest paved pass in the Eastern Alps and was voted the greatest driving road in the world by Top Gear. The switchbacks are impossibly tight, the gradients are brutal, and the views across the Ortler Alps are breathtaking. The road is typically open June through October, and every car enthusiast should drive it at least once before they die.