If the weather's not playing nicely, why not spend the day at Nagasaki Museum of History and Culture? You'll be fascinated by just how many interesting facts you can learn about days gone by here.
This collection of historical artifacts is located in Nagasaki. Once you've explored all you can at Nagasaki Museum of History and Culture, consider visiting nearby Glover Garden, Nagasaki Atomic Bomb Museum, and Oura Church.