The world’s steepest residential street (or so says the Guinness Book of World Records ), at its peak Baldwin St has a gradient of 1 in 2.86 (19°). From the city centre, head 2km north up Great King St to where the road branches sharp left to Timaru. Get in the right-hand lane and continue straight ahead. This becomes North Rd, and Baldwin St is on the right after 1km.