During winter, you can see monkeys soaking in a hot spring at Hakodate’s popular hot spring resort of Yunokawa. In the Tropical Botanical Garden, nearly 100 monkeys are fed at the open-air monkey mountain. When winter comes, hot spring water is poured in the pool, where the monkeys sit and bathe in the water peacefully. Watching those monkeys will warm your heart. (Holidays ; December 29 – January 1)