A historic hot spring resort located within a national park at an altitude of about 700 m in the center of the Shimabara Peninsula. During the Meiji era, it flourished as a summer retreat for foreigners, and it has long had a history as an international resort destination. The high-temperature springs and the dramatic bursts of white steam from Unzen Jigoku create an immense visual impact, making it a hugely popular spot even among overseas visitors. The strong sulfur aroma and milky-white water enhance the atmosphere of a hot spring retreat, and you can fully enjoy a highly antibacterial acidic sulfur spring amid magnificent nature.