If your trip to Karuizawa is all booked but your travel itinerary is a little on the empty side, let us give you a few hints and tips.Stop by Karuizawa Prince Hotel Ski Resort. It's one attraction you'll usually find on many visitors' to-do lists. If you still have some space on that travel schedule, Karuizawa Prince Shopping Plaza and Karuizawa Stone Church will keep you amused too.