23. Colorado 550 - United States

The huge maintenance costs of this road make it often referred to as the "Million Dollar Way.". The road runs from Bernalillo, New Mexico to Montrose, Colorado.

24. Karakoram Highway - Pakistan, China

From Hasan Abdal in Pakistan to Kashgar in China, the Karakoram Highway is also known as the China-Pakistan Friendship Highway. The road is known for its scenic views, borderless cliffs, and landslides.

25. Cat and Fiddle Road - England

Due to its sharp incline and decline, this road is one of the most dangerous in the UK. The road is also known as the "widow's road"
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