Actually, New Zeland is my dream country to go. Despite the fact, I haven't been there yet, I've visited more than 10 countries and go on travels in September, I will spend the whole month discovering new places in Europe. As I travel a lot, I can recommend good travel resources https://travelsites.com/
Iguazu falls will blow your mind. So much water over such an area. I was surprised to see that wrt average flow it ranks behind Niagara. Time it right with the rainy season. I was there in late May and it made Niagara look like a backyard brook.