A New Way to Choose Onsen.

Japan is home to an extraordinary diversity of onsen (natural hot springs) and a rich bathing culture shaped over centuries. Yet the unique characteristics and freshness of the water at its source, how it is delivered to bathers, and the dedication of those who care for and preserve these precious hot springs have not always received the recognition they deserve.

YUCHELIN is an onsen rating system that focuses on the onsen water people actually bathe in—the water delivered to the baths. Through comprehensive assessments by onsen experts, we evaluate its distinctive qualities and value and communicate them through our star rating system.

Our mission is to share the appeal of exceptional, lesser-known onsen with a wider audience and inspire new discoveries. By helping more people appreciate their unique value and experience them firsthand, we aim to support the people and local communities dedicated to preserving these remarkable hot springs for future generations.