Christchurch is the largest city on New Zealand's South Island and ranks as the second-largest city by urban area population in the country. It is situated in the Canterbury Region, positioned near the center of the east coast of the South Island, east of the Canterbury Plains. The city is located near the southern end of Pegasus Bay, bounded by the Pacific Ocean to the east and the ancient volcanic complex of the Banks Peninsula to the south.
The geography of Christchurch is relatively flat, with an average elevation of approximately 20 meters above sea level, excluding the Port Hills. The Avon River, also known as Ōtākaro, flows through the center of the city, bordered by a large urban park. The region experiences a temperate oceanic climate characterized by regular moderate rainfall.
Christchurch is recognized for its historic Māori heritage and its reputation as an English-style city. It earned the nickname "Garden City" due to architectural identities and planning similarities with garden cities in England. The urban population of the city is 407,800, while the metropolitan population reaches 556,500.