High Quality Content by WIKIPEDIA articles! The former Chief Post Office (alternate: Christchurch Central Post Office, originally known as the Government Building) is located in Cathedral Square, Christchurch, New Zealand. The building was initially a post office with other government services; until the 2011 Christchurch earthquake, it was a Visitor Information Centre, but has since been inaccessible, as access for the public to the central city has been removed. It was the site of the first telephone exchange in New Zealand. The structure is registered with the New Zealand Historic Places Trust as a Category I heritage building.