Baldwin Street in Dunedin, New Zealand is recognized by Guinness World Records as the steepest street in the world. It is 350 meters in length. The lower end of the street is covered in asphalt while the steepest and top end of the street is concrete instead of asphalt. During hot summer days the road used to melt and run down the hill. Concrete proved a better solution. It is a residential street and a mecca for tourists. The locals must get tired of tourists wandering across the street!
Baldwin Street and its steepness came about by accident. The street plan for Dunedin was developed in London, England with no regard for the terrain or consultation with those living in the area. The world’s steepest street is the result.
Each year a local confectionary company drops round candies at the top of the hill, racing them to the bottom as a fundraising event. A girl died after attempting to race down in a wheelie bin. Other stunts have been attempted over the years, some resulting in arrests.
With limited time, I walked halfway up. That was enough for me. 
The road used to melt and run down hill? That’s hot, dang.
It’s so steep, the tar just slid down the hill. It can get quite hot down there and it also snows in the winter. I sure wouldn’t want to live on this street.