Rotarua, New Zealand
Rotarua is in the central northen part of the north island and due to being built on a geothermal hotspot it features numerous hot springs, bubbling mud pool and natural vents (my first experience of this was witnessing steam gush out of grids and cracks in the pavement as we drove through the city)! Even if you don't witness geothermal activity with your own eyes you can never escape it as the town has a permanent whiff of stale eggs to it due to the sulphur fro...