5. Rotorua, New Zealand

Rotorua is a city on the southern shores of the lake of the same name, in the Bay of Plenty region of the North Island of New Zealand. Rotorua city is renowned for its unique “rotten eggs” aroma, which is caused by the geothermal activity releasing sulphur compounds into the atmosphere. Geothermal activity is at the heart of much of Rotorua’s tourist appeal. Geysers and bubbling mud-pools, hot thermal springs and the Buried Village (Te Wairoa) – are within easy reach of the city.This thermal activity owes itself to the Rotorua caldera on which the city lies. Waters of ivid colors, from yellow to orange to green which is partially possible to visit it.