If it's raining cats and dogs, why not spend your day at Taiwan Historica? You'll be surprised just how many interesting facts you can uncover about the past here.
You'll have no end of sightseeing choices when in Nantou. Taiwan Historica is a great place to begin here, but there are numerous other worthwhile spots to appreciate. Zhongxingxincun Children's Park, Taiwan Times Village, and Nantou Winery are close to the collection of historical artifacts and will top off your day nicely.