The Beppu Hell Tour is a popular sightseeing course that takes visitors through seven "hells" (jigoku) — natural hot spring vents scattered across Beppu City, Oita Prefecture. The seven hells include Umi Jigoku (Sea Hell), Chinoike Jigoku (Blood Pond Hell), Tatsumaki Jigoku (Spout Hell), Shiraike Jigoku (White Pond Hell), Oniishibozu Jigoku (Demon Stone Monk Hell), Kamado Jigoku (Cooking Pot Hell), and Oniyama Jigoku (Demon Mountain Hell). Each features distinctive colors and characteristics — from cobalt blue to crimson red to milky white. For over 1,000 years, these sites have erupted with steam, hot mud, and boiling water, earning them the name "hells." Beyond viewing, visitors can enjoy interactive experiences like tasting eggs and vegetables steamed by hot spring vapor or relaxing in foot baths. Umi Jigoku and Chinoike Jigoku are designated National Scenic Spots, and these powerful natural landscapes where you can feel the earth's breath up close are the highlight of any Beppu visit.