How is Japan different from the rest of the world?

Tatami

Tatami flooring originated as small, mobile seating for the nobility during the Heian Period. By the early Edo Period, the lower classes even started using tatami mats. They are not only comfortable but also high maintenance and must be replaced from time to time. They’re now used primarily in Japanese-style rooms, such as those in tearooms, traditional restaurants, and ryokan (inns).