1. Rohtang Pass — Himachal Pradesh, India
"Rohtang Pass is closed half a year and each season road crews use GPS to find the road and dig it out again. However, massive and deadly landslides continue, giving the pass its name, which translates to ground of corpses." —Via Quora
2. Great Ocean Road — Victoria, Australia
The Great Ocean Road was built by returned soldiers between 1919 and 1932 and is dedicated to those killed during World War I, making the road the world's largest war memorial. The road passes by many famous natural landmarks, including the famous limestone formations known as the "Twelve Apostles."
3. Beartooth Highway — Montana and Wyoming
Beartooth Highway is the stretch of U.S. Highway 212 that connects Red Lodge, Mont., and Cooke City, Mont., passing along the Montana-Wyoming border. Due to heavy snowfall, the pass is usually open each year only from mid-May through mid-October.
4. Atlantic Ocean Road — Averøy, Norway
The route was originally proposed as a railway line in the early 20th century. The land was later adopted for public road use in the 1970s, and construction began in 1983.
5. Hana Highway — Maui, Hawaii
The Hana Highway is a 68-mile (109 km) stretch of road that connects Kahului with the town of Hana in east Maui. For those who stay the course, at the end of the Hana Highway is the Oheo Gulch, also known as the "Seven Sacred Pools."
6. Highway 99 "Sea to Sky Highway" — British Columbia, Canada
Highway 99 is originally named after the old U.S. Route 99, which ran from the U.S.- Mexican border in Calexico, Calif., to the U.S.- Canadian border in Blaine, Wash.
7. Los Caracoles "Snails Pass" — In the Andes between Argentina and Chile
This road acts as the main transportation route between Santiago, Chile, and Mendoza, Argentina. Due to its elevation, it's covered with a light layer of snow or ice for the majority of the year.
8. Øresund Bridge — Denmark and Sweden
"The Oresund Bridge is the world's longest single bridge carrying both road and railway traffic. The connection starts on the Denmark side near the airport as an underwater tunnel that emerges on a man-made island." —Via NASA
9. Going-to-the-Sun Road — Glacier National Park, Montana
Going-to-the-Sun Road is the only road to pass through Glacier National Park winding through Logan Pass. Every year it's one of the most difficult roads to snow plow, as the roads can be covered with up to 80 feet (24 m) of snow each winter.
10. Guoliang Tunnel — Taihang Mountains, China
Built to connect the small village of Guoliang with the rest of the world, this tunnel was built by 13 villagers over a five-year period. The villagers took it upon themselves to build the passage after the Chinese government refused to build a multimillion-dollar road that would be used by approximately only 300 people. —Via Amusing Planet
11. White Rim Road — Canyonlands National Park, Utah
White Rim Road winds over 100 miles through Canyonlands National Park in Utah. Only mountain bikes, four-wheel drive vehicles, and street-legal dirt bikes are allowed on the road. A trip through the entire route takes approximately three to four days, and a permit is required for overnight trips. —Via NPS
12. Transfăgărășan Road — Sibiu, Romania
The Transfăgărășan is the second-highest paved road in Romania and was built between 1970 and 1974 in response to the 1968 invasion of Czechoslovakia by the Soviet Union. Romanian leaders wanted to ensure their military would have quick access through the mountains should a similar invasion transpire in Romania.
13. Highway 101 and Pacific Coast Highway — California Coast
Historic Highway 101 stretches from the California-Oregon state line down into the heart of Los Angeles. Following the California coastline for a majority of its route, Highway 101 has become a world-famous road-tripping route due to its excellent views and generally spectacular weather. Pacific Coast Highway aka PCH or CA State Route 1 follows Highway 101 concurrently down the coast and meets for a 54-mile stretch through Santa Barbara and Ventura County.
14. Yungas Road — La Paz, Bolivia
The Yungas Road in Bolivia is also known as "Death Road" or the "Road of Fate" and is one of the most dangerous drives in the world. The 38-mile road reaches elevations of up to 15,000 feet, with some sections as narrow as 10 feet wide. And to add to the insanity, there is not a single guardrail along the entire road. —Via Smarter Travel
15. Stelvio Pass — Eastern Alps, Italy
Stelvio Pass is the second-highest paved mountain pass in the Eastern Alps — at 9,045 feet (2,757 m) — after the Col de l'Iseran. Just above the pass is the "Three Languages Peak," which earned its name because it is the location where the Italian, German, and Romansh languages meet.
16. Millau Viaduct — Millau-Creissels, France
The construction of the Millau Viaduct began in 2001 and cost about €400 million to complete. With one mast's summit at 1,125 feet (343 meters) above the base of the structure, the Millau Viaduct is the tallest bridge in the world.