Senboku City is located in the eastern part of Akita Prefecture, and is an area with many famous places and hot springs. It also has a wide range of hot spring facilities, including Nyuto Onsen. The area is thriving as an agricultural and tourist city, and its main specialties are spinach and corn, which are unique to an agricultural city. Senboku City is home to Lake Tazawa, said to be the deepest lake in Japan. Lake Tazawa is a round caldera lake. There are many accommodations in the surrounding area, and you can enjoy spectacular views while looking out at the lake. Many people also enjoy driving there. In April, the Sashimaki Marsh Water Lily Festival is held, and you can see water lilies blooming all over the area.