New Zealand's Department of Conservation protects more than 30 percent of the natural land. Outdoor enthusiasts can hike through dense rain forests, around active volcanoes or even up the side of a massive glacier.
Several companies operate cruises on Fiordland National Park's remote Milford and Doubtful sounds. Nature enthusiasts regularly spot fur seals, penguins, dolphins and many sea birds on a variety of cruises ranging in length from a half-day to overnight.
Sea kayakers frequent Abel Tasman National Park and its crystal clear waters. Whitewater rafters should head to the Shotover or Kawarau rivers near Queenstown or the Kaituna River near Rotorua.
Thrill seekers can race down mountainsides at Queenstown and Rotorua's popular luge tracks. For higher thrills, skydiving companies operate all over the country.
Native AJ Hackett invented commercial bungee jumping in the 1980s in Queenstown. The AJ Hackett locations in Queenstown and Auckland are among the best in the world. New Zealand is also home to Zorbing, the extreme sport that sends riders sloshing down a hillside in a water-filled ball.