Baldwin Street

Baldwin Street holds the World Guinness Book of records as the steepest street in the world. No other street gains more altitude in 10 horizontal metres (33 ft), measured along the street's centreline. It has a gradient of 35% According to Wikipedia, the street's steepness was unintentional. As with many other parts of early Dunedin, and indeed New Zealand at large, streets were laid out in a grid pattern with no consideration for the terrain, usually by planners in London.