* **High Quality Natural Hot Spring**: Kaiunzen has natural hot springs originating from the Unzen volcano. Travelers can enjoy a rich hot spring bath to relieve physical and mental fatigue. There are a variety of baths in the hotel, including indoor baths and open-air baths, allowing you to enjoy the hot springs while appreciating the beautiful surrounding natural landscape. * **UNIQUE LOCATION**: Kaiunzen is located on the hills of Unzen, surrounded by magnificent mountains and rich green vegetation, providing excellent views. Travelers can enjoy drinks on the hotel's terrace, enjoy the spectacular views of sunrise and sunset, and feel the charm of nature. * **Local Food Feast**: We provide exquisite Japanese kaiseki cuisine based on Nagasaki's local specialty ingredients. The menu combines local fresh seafood, seasonal vegetables and handmade specialties, allowing travelers to experience rich cultural heritage while tasting delicious food. * **Cultural experience activities**: It provides a variety of expe