Final answer:
The Grumpy Old Men Festival, featuring a plunge into the Mississippi River, takes place in Wabasha, Minnesota. This festival is inspired by the movie set in Wabasha and celebrates with various winter activities.
Step-by-step explanation:
The Grumpy Old Men Festival, known for its event where participants take a plunge into the Mississippi River, is held in Wabasha, Minnesota. This festival is inspired by the film "Grumpy Old Men," which was set in the same Minnesotan city. The festival celebrates winter with unique activities, including an ice fishing contest and the aforementioned polar plunge. It's one of the many unique local festivals that showcase the traditions and community spirit of the Upper Midwest region of the United States.