Zao Onsen is a famous hot spring resort located in the Yamagata Prefecture of Japan. Nestled in the Zao Mountains, it is known for its beautiful natural scenery and therapeutic mineral waters. The area offers various outdoor activities, including hiking in the summer and skiing in the winter, making it a year-round destination for visitors. The hot springs in Zao Onsen are rich in sulfur and are believed to have healing properties. The resort features numerous ryokans (traditional Japanese inns) and public baths, allowing guests to experience the relaxing benefits of the onsen. The unique landscape is also home to the famous Zao Snow Monsters, which attract many tourists during the winter months.