The onsen drawn from the "Hell" fields are characterized by their cloudy, strongly acidic waters. We invite you to bask in the blessings of Unzen’s springs while gazing out at the rising steam of the volcanic vents.

The guest rooms at KAI Unzen, known as "Wakaran-no-Ma," feature a decor inspired by Nagasaki’s unique culture—a beautiful fusion of "Wa" (Japan), "Ka" (China), and "Ran" (The Netherlands).

The broth of the shabu-shabu served at dinner is flavored with umami-rich flying fish, enhancing the flavor of the meat, as well as the udon noodles added at the end of the meal.

Guests get to arrange letter blocks in a variety of creative ways as they try their hand at letterpress printing, a technique first practiced in Japan in Nagasaki.

Miyamakirishima azaleas bathe the mountain slopes in soft pink. Designated as a National Natural Monument, this celestial flower garden is an iconic spring vista of Unzen.

A summer pass where refreshing breezes make you forget the heat. The contrast between the deep green slopes and the piercing blue sky leaves your mind and body feeling clear and peacefully restored.

Autumn brings a breathtaking spectacle of fiery reds and vibrant yellows. Gazing down from the ropeway, an exquisite panorama unfolds like a richly woven brocade spread across the mountain.

"When temperatures drop below freezing, 'Rime Ice' blooms like delicate crystals upon the trees. Sparkling brilliantly in the sunlight, this silvery world is a mystical gift from nature—a rare encounter reserved only for the most fleeting winter days.