in Dunedin North, as are the Dunedin Botanical Gardens. State Highway 1 joins the Dunedin road network at a busy intersection at the foot of Pine Hill and North East Valley at the "Gardens Corner", close to the Botanical Gardens' northwestern edge. North East Valley and The Gardens Lindsay Creek, a tributary of the Water of Leith, flows southwest down the long North East Valley at the northern end of Dunedin's urban area. This valley, lying between Pine Hill and Signal Hill, houses a residential suburb consisting of one main road with streets heading off it up the steep hills on either side. One of these streets, Baldwin Street, is listed as the world's steepest street. The original North East Valley post office was located near the foot of Baldwin Street, but was relocated to the Gardens to be nearer the retail area. North East Valley's 2001 population was 4,266. The southern end of the valley is usually referred to as The Gardens or The Gardens Corner (The Dunedin Botanical Gardens are located nearby). The Gardens Corner contains one of Dunedin's main retail areas, and also one of its busiest road intersections - here the Northern Motorway (State Highway 1) joins Dunedin's one-way street system. This area includes Dunedin North Intermediate School and several University halls, notably Knox College and Salmond College. Normanby and Mount Mera Normanby is the name of the northern end of North East Valley, at which point Dunedin's urban area gives way to open countryside. The land here is steeply sloping, as it is the foothills of Mount Cargill. The slopes of Mount Cargill itself are densely wooded, and are crisscrossed with walking tracks, some of which start at the Bethune's Gully reserve, at the northern end of Normanby. Chingford Park, at the Normanby end of the valley is now a sports field and recreational reserve, but was originally the residence of one of Sam Neill's forebears, who was founder of Dunedin Company Wilson Neill. The large house is now gone, but the stone stables still on the site are impressive. Mount Mera is an area of State housing sitting on the north facing side of the valley, just above Normanby. Opoho Opoho suburb sits on the western flank of Signal Hill overlooking North East Valley and the Dunedin Botanic Gardens. It is a residential suburb with very mixed demographics, containing student flats, significant numbers of