Kagawa, also called the Udon prefecture, is a small prefecture on Shikoku island. Here are the top sightseeing spots when visiting Kagawa, according to TripAdvisor.
Kagawa is only about an hour’s flight from Tokyo, and is also accessible from Okayama by a 1 hour train ride, so it’s the perfect place for a overnight trip. You can try their famous Udon for yourself.