Dunedin is the second-largest city in the South Island of New Zealand, and the principal city of the region of Otago. It is New Zealand's fifth largest city in terms of population, it is the hub of the fifth-largest urban area and the largest in size of council boundary areas. For historical and cultural reasons, Dunedin is considered one of the country's four main centres.
The city stands on the hills and valleys surrounding the head of Otago Harbour. The harbour and hills are the remnants of an extinct volcano. It is the home of the University of Otago.