Guoliang Tunnel Road (Photo/Chinadaily.com.cn)

2. Guoliang Tunnel Road

The Guoliang Tunnel Road was built in the Taihang Mountains of central China's Henan province. It took five years to complete, and a few villagers died in accidents during the construction. The road is about 1.3 kilometers (0.81 miles) long, 4 meters wide and 5 meters high, which makes the road extremely scary. The tunnel has 30 windows that allow drivers to enjoy the spectacular view of the Taihang Mountain. The mountain is known as "the long corridor in cliffs." The road is regarded as one of the ten most dangerous roads in the world.