Yakushima is a small island in south of Japan, belonging to the Kagoshima prefecture. It is a good place for trekking and outdoor activities. It has subtropical climate, making it a pleasant place to stay.
You can both spend time driving around the island looking at the different sights, such as waterfalls, monkeys hanging around in the roads, the sea turtles laying eggs in the night, or if you are more for activities, go trekking in the mountains or do kayaking on the small rivers.
The forest of Yakoshima have inspired a number of films and books due to its dream like appearance. You never know what you can find in the forest.