 The Christchurch High Court also hosts a divisional court of the Court of Appeal.State Highway 1 runs the length of Canterbury, connecting north to Blenheim and the Cook Strait ferry terminal at Picton and south to Oamaru, Dunedin and Invercargill.Christchurch International Airport, located in Harewood on the northwest outskirts of Christchurch, is the region's main airport.