Nishiyama Onsen is a traditional Japanese hot spring located in the Yamanashi Prefecture. It is renowned for its natural mineral-rich waters, which are believed to have healing properties. The onsen offers a serene environment surrounded by beautiful mountains, making it a popular destination for relaxation and rejuvenation. The onsen features various bathing options, including indoor and outdoor baths, allowing visitors to enjoy the scenic views while soaking in the warm waters. Nishiyama Onsen is also known for its historic ryokan, or Japanese inns, where guests can experience authentic Japanese hospitality and cuisine.