Auckland hosts New Zealand's main New Year's Eve fireworks at the Sky Tower.
Auckland's Sky Tower becomes the centerpiece of the city's New Year countdown. Fireworks are launched from the tower at midnight, creating a highly visible display over central Auckland and the surrounding harbor region. The event is widely shown in New Zealand media and is among the country's best-known New Year images.
The Sky Tower is an especially clear landmark because it rises above Auckland's downtown skyline. Opened in 1997, it is a telecommunications and observation tower that also contains restaurants and viewing areas. Its height allows the fireworks to be seen from many parts of the metropolitan area.
New Zealand has celebrations in numerous towns and cities, and other locations stage their own fireworks. The question refers to the nationally prominent tower-based display, which is specifically associated with Auckland's Sky Tower rather than Wellington or Christchurch.