下北半島
Mutsu occupies most of Shimokita Peninsula and is bordered by Mutsu Bay to the south and Tsugaru Strait to the north, and is the northernmost city on the island of Honshū. The volcanic Osorezan Mountain Range extends across the northern portion of the city, and includes a number of caldera lakes. Parts of the city is within the limits of the Shimokita Hantō Quasi-National Park, including Mount Osore, Yagen Valley, and Taijima.