6. Skippers Road, New Zealand
Skippers Road was built in 1890, so that gold miners could bring heavy machinery into Skippers Canyon. Today, the road is hardly changed from how it was back then: the rock that the road is built upon is so soft that maintaining the road is a losing battle. The road tends to turn into dust as soon as it’s dry, and greasy mud the moment it rains. Closer to the canyon, you can (carefully) drive across a one-lane suspension bridge, and imagine what it would have been like traveling through the area on foot or with a horse.