Beppu is Japan’s — and arguably the world’s — most extraordinary concentration of geothermal activity. The city produces more hot spring water per day than any other place on Earth except Yellowstone, discharging over 130,000 tonnes of water from approximately 2,800 individual springs across eight distinct thermal zones (onsen hachi yu). Steam vents from roadsides, drainage channels, and building gaps across the city; the permanent haze visible from above is actual geothermal steam. For onsen enthusiasts, Beppu is a pilgrimage destination.
The Hells (Jigoku)
The Kannawa district contains Beppu’s famous jigoku (hells) — geothermal pools too extreme for bathing, visited as spectacle. The seven main hells (combined entry ¥2,200) each have distinct character: Umi Jigoku (Sea Hell) — a cobalt-blue pool at 98°C caused by cobalt and sulfuric acid; the color is genuinely electric. Oniishibozu Jigoku — grey mud bubbling in slow, thick domes (the bubbles look like the shaved heads of Buddhist monks). Shiraike Jigoku — milky white silica pool. Yama Jigoku — hippos and flamingos in steam-heated grounds, an eccentric addition. Kamado Jigoku — a complex with a red-faced demon and multiple pools of different colors and temperatures. Oniyama Jigoku — crocodiles, heated by the pools. Chinoike Jigoku (Blood Pond Hell) — a vivid red pool from iron hydroxide; one of Japan’s oldest recorded hot spring sites, with a history of over 1,300 years. Tatsumaki Jigoku (Spout Hell) — a geyser that erupts every 30–40 minutes.
Bathing in Beppu
Beyond the tourist hells, Beppu’s bathing culture is deeply local and authentic. The Takegawara Onsen (1879 building, reconstructed 1938) offers both a standard hot bath and sunamushi (hot sand bath) — attendants bury you in thermally heated sand; the warmth penetrates differently from water and is deeply relaxing. The Hyotan Onsen (multiple award-winner) has 11 different bath types including waterfall, open-air, sauna, and sand bath. Shibaseki Onsen — a spartan, unembellished communal bathhouse operating since the Meiji era, extremely local, ¥100 entry. For solo travelers, kashikiri (private room baths) are widely available from ¥1,000–¥3,000 per session.
Jigoku Mushi — Hell Steam Cooking
The Kannawa district has developed a cuisine unique to Beppu: jigoku mushi (hell steaming) — cooking food in geothermal steam. DIY steam cookers at Jigoku Mushi Kobo Kannawa allow visitors to steam their own ingredients (eggs, corn, seafood, vegetables) in steam boxes over natural vents. The eggs have an unusually rich, creamy yolk; the corn develops a sweetness and texture unavailable from boiling.
- The seven hells are best visited on a weekday morning — crowds are significantly thinner.
- Beppu Hatto (Eight Hot Spring Zones) stamp rally: collect stamps at each zone for a small souvenir.
- Beppu is 2 hours from Fukuoka by limited express; also reachable by ferry from Osaka (overnight crossing, scenic and practical).