IMAGES: Baldwin Street, The Steepest Street in the World

Located in the city of Dunedin, in southern New Zealand, the Baldwin Street has earned the distinction of being the steepest street in the world. This 350 meters long street begins with a moderate slope and then climbs steeply to reach a maximum slope of 1:2.86 or 19 degrees! The street is so steep that it's surface had to be laid with concrete instead of asphalt otherwise on a warm day the tar would flow down the slope!

Sources:

 Amusing Planet