New Zealand is the Pacific island nation associated with the New Year's Eve fireworks display over Auckland's Sky Tower.
Auckland's Sky Tower is a defining landmark of New Zealand's largest urban area and serves as the launch point or focal structure for the city's midnight fireworks. The tower's height makes the illuminated display visible across much of Auckland, where crowds gather to welcome January 1.
The Sky Tower opened in 1997 and rises 328 meters (1,076 feet), making it the tallest freestanding structure in the Southern Hemisphere. Its New Year's display is often described in international coverage as one of the first major city fireworks events of the new year because of New Zealand's position near the International Date Line.
Australia is another nearby country with major New Year's celebrations, especially Sydney's harbor fireworks, but Sydney does not use Auckland's Sky Tower. Fiji and Samoa are also Pacific island nations, yet the landmark in this question is specifically in Auckland, New Zealand.