In the US state of Colorado, there’s a special highway built in the late 1880s: the Million Dollar Highway. It's one of the nation’s most spectacular drives. You'll be on the "outside" for a while with a hell of a view to your right (let the passenger look. You'll want to watch the road). Forget standard driving safety measures like guardrails and shoulders.

Carretera de los Yungas is, probably, the most famous road in the world. This gravel dirt track covers a 36.4km (22.61 miles) stretch between La Paz and Coroico, in the Yungas-area of the Bolivian department of La Paz.

Tucked away in the midwest part of the Norwegian coastline, the coastal Atlantic Road is one of the most scenic drives in the world. Driving along this road is like teetering on the edge of the sea. The curvy road dips and arches over the brutal waves of the Norwegian Sea that often crash over the pavement during storms. This unique highway will bring you out to the very farthest point where the land ends and the ocean begins.

Tucked away on the south-west of New Zealand's South Island, Skippers Canyon Road is today one of New Zealand's better known scenic roads and unbelievably scary as it’s totally narrow and difficult to maneuver your car. It’s a road so dangerous that your rental car insurance won’t be honored if you drive on it.

The D915 stands as one of the world's most challenging roads. Nestled between the Black Sea and the Northeast Anatolia regions of Turkey, the road's treacherous terrains are not to be underestimated. Only seasoned drivers, daredevils, or those with significant experience should venture here. A single misjudgment can lead to tragic consequences.

Fairy Meadows Road is the name of a spectacular and dangerous high mountain track located in the Gilgit-Baltistan region of Pakistan. The unpaved road is completely unmaintained, there are no guardrails to protect you, and it gets so narrow that near the end you’ll have to cover the last section by walking or biking.

Kahekili Highway is a strip of one-lane paved road framed by rock on one side and sheer cliff drops on the other with a length of 21 miles, running from Kapalua to Wailuku. It’s a legendary road known for its snaking turns, narrow passages, and dangerous road conditions, though nowadays that last factor is gone, since the road was completely repaved not too long ago.

Iron Mountain Road is a demanding 17 miles scenic drive, located in the Black Hills of South Dakota, with 314 curves, 14 switchbacks, 3 tunnels and 3 pigtails (turns which loop over their own road, allowing the road to climb rapidly).

The Karakoram Highway (known informally as the KKH) is said to be the highest paved international road in the world running between Western China and Pakistan. It's the road to paradise if you like exploring the mountains. It’s once in a lifetime road trip for adventure lovers.

Black Bear Pass is a high mountain pass at an elevation of 3.915m (12,844ft) above the sea level, located in San Miguel County in the U.S. state of Colorado.

Engineer Pass is a high mountain pass at an elevation of 3.901m (12,800ft) above the sea level, located in Ouray County, in the U.S. state of Colorado. It’s mostly a first gear ride because the road is rough and rocky. It's one of the highest roads of Colorado.

Shafer Trail Road-Potash Road is the name of an iconic drive located on the east central edge of Utah, in the western United States. It requires extreme caution at the best of times for vehicles and mountain bikes, but especially so in inclement weather and at night. It’s at times so narrow that only one car can pass at a time.

Located on the border of Tennessee and North Carolina, in the USA, Deals Gap, also known as Tail of the Dragon is said to be one of the most scenic drives in the USA. Featuring 318 curves, this winding mountain road is unlike anywhere else in the world.

Tucked away in northwestern Hunan Province of China, Tianmen Shan Big Gate Road is the name of an extraordinary drive on the limit with 99 turns and steep parts.

Beartooth Highway is a 67 mile stretch of US Highway 212 with breathtaking views of the Absaroka and Beartooth Mountains, in Wyoming and Montana, climbing to an astounding 10,964 feet above sea level. It's one of the highest roads of Wyoming.

Furka Pass is a high mountain pass at an elevation of 2.431m (7,976ft) above the sea level, located in one of the snowiest regions in Switzerland. It’s one of the world's most iconic, exhilarating and exciting drives, through the Swiss Alps. The pass was immortalized by the Aston DB5 / Ford Mustang car chase in James Bond's Goldfinger. It’s one of the most famous Alpine roads of Switzerland.

Leh-Manali Highway is the name of a challenging mountain road across the Himalaya mountain range. It passes through some of the world’s highest mountain passes, with a mean altitude in between 2 to 3 miles above sea level.

Part of Utah Route 261 Moki (or Mokee) Dugway is a staggering, graded dirt switchback road carved into the face of the cliff edge of Cedar Mesa. It consists of 3 miles of steep, unpaved, but well graded switchbacks (11% grade), which wind 1,200 feet from Cedar Mesa to the valley floor near Valley of the Gods. 

Oh-My-God Road is a very exciting drive located on the boundary of Clear Creek and Gilpin counties in the U.S. state of Colorado. With room enough for barely two cars to pass slowly, this road will surely feel a little dangerous to you.

Col du Chaussy is a high mountain pass at an elevation of 1.533m (5,029ft) above the sea level, located in the Savoie department in the Rhône-Alpes region in France. The road to the summit starts with the famous “lacets de Montvernier”, a special 3 km stretch with 17 hairpins as the road virtually climbs a cliff. It's an improbable road clinging to the edge of the cliff. It's one of the most scenic drives in the world.

Going-to-the-Sun Road is one of the most amazing highlights of Glacier National Park in Montana, USA. This engineering marvel is one of the most senic drives in the world. It is one of the most difficult roads in North America to snowplow in the spring.