Christchurch is the largest city in the South Island of New Zealand and the seat of the Canterbury Region. The Christchurch urban area lies on the South Island's east coast, just north of Banks Peninsula. It is home to 389,700 residents, making it New Zealand's third most-populous city behind Auckland and Wellington.
The Avon River flows through the centre of the city, with an urban park located along its banks. At the request of the Deans brothers—whose farm was the earliest settlement in the area—the river was named after the River Avon in Scotland, which rises in the Ayrshire hills near to where their grandfather's farm was located.
Archaeological evidence has indicated that the Christchurch area was first settled by humans about 1250. Christchurch became a city by Royal Charter on 31 July 1856, making it officially the oldest established city in New Zealand. The Canterbury Association, which settled the Canterbury Plains, named the city after Christ Church, Oxford. The new settlement was laid out in a grid pattern centred on Cathedral Square; during the 19th century there were few barriers to the rapid growth of the urban area, except for the Pacific to the east and the Port Hills to the south.
Agriculture is the historic mainstay of Christchurch's economy. The early presence of the University of Canterbury and the heritage of the city's academic institutions in association with local businesses has fostered a number of technology-based industries.
The city suffered a devastating series of earthquakes between September 2010 and early 2012, with the worst of them soon after midday on 22 February 2011, in which 185 people were killed and hundreds of buildings across the city collapsed or suffered severe damage. By late 2013, 1,500 buildings in the city had been demolished, leading to an ongoing recovery and rebuilding project.