Japanese tatami houses are traditional homes characterized by their use of tatami mats, which are made from rice straw and covered with woven rush grass. These mats provide a soft, natural flooring and are typically used in rooms called washitsu. The layout of tatami houses often emphasizes simplicity and harmony with nature, featuring sliding doors known as fusuma that allow for flexible room arrangements. In addition to tatami mats, these houses often include wooden structures and large windows that invite natural light. The design reflects the principles of Zen philosophy, promoting a peaceful and minimalist living environment. Traditional tatami houses are an important part of Japanese culture and heritage.