Kaiyukan Aquarium in Osaka
Osaka makes the list once again with its aquarium, the Kaiyukan. While the building does have a unique exterior design, we’re guessing its high ranking is a direct result of its awe-inspiring whale shark. Try to synchronize your visit with its feeding time, when the gentle giant opens its mouth wide and sucks in the surrounding water like a colossal vacuum cleaner in order to get its fill of tasty plankton.