Featuring air thick with the smell of sulfur and white steam bursting from underground, Unzen Jigoku (Unzen Hell) really lives up to its name. It is known as a place where Christians were once tortured to death, and there are monuments dedicated to their martyrdom. Some of the attractions include the “Unzen Jigoku Steaming Footbath,” where visitors can experience the sensation of geothermal heat and steam, and the “Unzen Jigoku Workshop,” which sells eggs with an interesting effect: “Eat one, and you live a year longer. Eat two, and you live two years longer. Eat three, and you live long until you die.” In the fall, over 2,000 of these eggs are sold every day, making them quite the hot item indeed.