<human>:  What cities in New Zealand have the most tourist activities?
<bot>: The most popular cities for tourist activities in New Zealand are Auckland, Christchurch, Queenstown, and Rotorua. These cities offer a variety of experiences that appeal to travelers from all around the world, from hikes and nature walks to wine tasting and art galleries. In addition, these cities are home to some of New Zealand's most popular attractions, including the Bay of Islands and the Waitomo Caves. Whatever kind of adventure you're looking for, you can find it in one of these vibrant New Zealand cities.