New Zealand. It is the truth that sheep population is about 4 times of human population in NZ. And it is also the cleanest country I've ever visited.
Especial in South Island, there are a lot of natural attraction sites to visit and a lot of exciting outdoor activities worthy to try. I spent about 6 days in New Zealand, saw something really special and tried something unique. After this trip, I think I will make another trip to NZ again to explore more of it.