Visit Lake Kinrin, a pond at the foot of Mount Yufu in the onsen town of Yufuin. Fed by both spring water and hot‑spring flows, the lake stays warm year-round and is often covered in morning mist. You can explore the area via a self-guided walk or join a guided walk, where an expert will explain the lake’s history, local plants and animals, and folklore, pointing out features you might miss on your own. Seasonal changes bring different views, from autumn leaves to reflections on the water, and the lakeside path provides a calm, easy walk through Yufuin’s natural surroundings.