Located near Qinglong town in Guizhou Province, 24-Zig Road is a curvy mountain road with 24 hairpin turns. The road was built by the Chinese during WWII to transport supplies to help resist the Japanese invasion. It’s one of the most famous hairpinned roads in the world.

Shimshal Valley Road is a terrifying mountain drive located in Pakistan that tests both the skills of drivers and the endurance of their vehicles.

Askja Road is a winding dirt track running towards Askja volcano, a stratovolcano situated in a remote part of the central highlands of northeast Iceland. The road has some challenging sections with several fords and river crossings. Keep in mind it’s a very dangerous drive.

Col du Jandri is a high mountain peak at an elevation of 3.165m (10,383ft) above sea level, located in France. It's one of the highest roads in Europe.

Umbrail Pass is an international high mountain pass at an elevation of 2,506m (8,221ft) above sea level, located on the Swiss-Italian border. At this elevation, the road to the summit is currently the highest paved road in Switzerland and one of the highest paved roads in the Alps.

F208 (Fjallabaksleið nyrðri) is one of the most challenging roads in Iceland. Expect very tough driving conditions, with potholes, rocks, uneven terrain, and even rivers to ford.

Slate Peak is a high mountain peak at an elevation of 2,271m (7,450ft) above sea level, located in the US state of Washington.

Cerro Uturuncu is a stratovolcano located in the Potosí Department of Bolivia. A minor gravel road climbs up to 6.008m (19,711ft) above sea level. It’s one of the highest roads in the world. The biggest problem is the extremely low oxygen for engine combustion.

Cirque de Jaffar is a natural cirque located in the Midelt Province of Morocco. The road to the natural amphitheatre is simply stunning. It’s said to be one of the most dangerous roads in the country.

Shipki La is an international high mountain pass and border post on the India-China border, at an elevation of 3,954m (12,972ft) above sea level. The border is no longer open for non-residents.

Scanuppia-Malga Palazzo is a mountain peak at an elevation of 1.571m (5,154ft) above sea level, located in Trentino, Italy. The road is brutally steep.

Located in the southwestern part of Crete, in Greece, the road from Kallikratis to Kapsodasos with 27 hairpin turns is one of the most hairpinned roads in the world.

Les Ecouges is a very challenging drive located in the Isère department in France. With provocative verticality and derisory barriers, the balcony section is as hair-raising as it is short and narrow. It’s one of the French balcony roads.

Alto de l’Angliru is a high mountain peak at an elevation of 1.558m (5,111ft) above sea level, located in the province and autonomous community of Asturias, in Spain. It’s one of the hardest and most epic climbs you can ride on two wheels.

Colle delle Finestre is a high mountain pass at an elevation of 2,203m (7,227ft) above sea level, located in the Italian region of Piemonte.

Located in the Smolyan Province of Bulgaria, the road through Trigrad Gorge, leading to Devil’s Throat Cave, is stunning. Oncoming traffic is a nightmare.

In the region of Rugova in Kosovo, beyond the town of Peja, there’s a narrow pass that enters one of the most spectacular areas in the Balkans: the Rugova Gorge, where granite walls vault 609 meters (2,000 feet) above the Drini River.

Karabet Geçidi is a high mountain pass at an elevation of 2,994m (9,822ft) above sea level, located in Van Province, in Turkey. It’s one of the highest roads in Europe.

Alte Axenstrasse (Old Axenstrasse) is the name of an engineering masterpiece located in the canton of Uri in Switzerland. The road is closed to vehicles indefinitely.

Mount Bross is a high mountain peak located in Park County, in the U.S. state of Colorado. An old mining road on the way to the summit tops out at 4,071m (13,356ft) above sea level. It's one of the highest roads in the USA.

Black Rock Reservoir is a small remote yet scenic lake at an elevation of 1,260m (4,133 ft) above sea level, located in Fresno County, in the U.S. state of California.