The Hells of Beppu in Beppu, a city on the island of Kyushu, are a series of hot springs that are too hot for bathing, but are a unique and interesting sight to see.
Takamatsu is a city located on the island of Shikoku, and is known for its beautiful gardens, udon noodles, and art museums.
Japan has a theme park called Huis Ten Bosch that is a replica of a Dutch town, complete with windmills and tulips.