The Snow Monkey Park was established in 1964 as a facility where wild Japanese macaques can be observed in an environment without fences or cages. All this while providing others with the chance to learn about primate behavior.

The park also aimed to keep the monkeys in the area and away from their other great love, pillaging the neighboring farmland. Staff at the park have fed the monkeys daily ever since its opening. They live in the surrounding mountains, but come down for the free meals.

The monkeys visit the park year-round, and can be seen soaking in the hot springs in winter. December to March is usually the best time to witness them bathing.