Christchurch lies in Canterbury, near the centre of the east coast of the South Island, east of the Canterbury Plains. It is located near the southern end of Pegasus Bay, and is bounded to the east by the Pacific Ocean coast and the estuary of the Avon and Heathcote Rivers. To the south and south-east the urban portion of the city is limited by the volcanic slopes of the Port Hills separating it from Banks Peninsula. In 2006, Banks Peninsula was incorporated into the city, in effect tripling the city's land area while adding only about 8,000 people to the city's population. To the north the city is bounded by the braided Waimakariri River.
Christchurch is one of only eight pairs of cities in the world that has a near-exact antipodal city. Half of these antipodal pairs are in New Zealand and Spain/Morocco�with A Coru�a, Spain as Christchurch's antipode.
Christchurch is one of a group of only four cities in the world, that have been carefully planned following the same layout of a central city square, four complimenting city squares surrounding it and a parklands area that embrace the city centre. The first city built with this pattern was Philadelphia, later came Savannah and Adelaide. The fourth city using this pattern was Christchurch. As such Christchurch holds an important legacy and a strong platform for future development.
Christchurch has one of the highest-quality water supplies in the world, rated one of the purest and cleanest water in the world. Untreated, naturally filtered water is sourced, via more than 50 pumping stations surrounding the city, fromaquifers emanating from the foothills of the Southern Alps
