The Hells of Beppu in Beppu, a city on the island of Kyushu, are a series of hot springs that are too hot for bathing, but are a unique and interesting sight to see.

The population of Japan is over 126 million people, making it the 10th most populous country in the world.

The Japanese macaque, also known as the snow monkey, is the northernmost-living non-human primate and is famous for its habit of bathing in hot springs during the winter.