In Spanish, it's called el camino de la muerte, which translated into English means "road of death." In 1995, the Inter-American Development Bank called it the "world's most dangerous road."

Found in Bolivia, this dirt and rock route stretches 38 to 43 miles, depending on the source, and descends from La Paz (at 12,000 feet) down to the beautiful rain forest town of Coroico at the edge of the basin of the Amazon River.

Why so dangerous? An average of 26 vehicles fall off this road each year; and 200 to 300 people lose their lives on it annually. Steep hillsides, cliffs, and dropoffs with no guardrails present hazards, and the road in places has room for only one vehicle. Rain and fog complicate the trip, along with muddy surfaces and loose rocks sliding down hillsides. On July 24, 1983, over 100 passengers were killed when a bus veered over the edge and crashed into a canyon.

But, despite the danger, the road has become an increasingly popular tourist attraction since the early 1990s.