Tatami (畳) are types of mat used as flooring material in traditional Japanese-style rooms. They are made in standard sizes, twice as long as wide, about 0.9 metres (3') by 1.8 metres (6') depending on the region. In martial arts, tatami are the floor used for training in a dojo and for competition.
Machine-sewing of tatami
Cross-section of a modern tatami with an extruded polystyrene foam core
Making tatami mats, late 19th century.
Close-up of mat surface and edging
Chashitsu in Japanese tradition is an architectural space designed to be used for tea ceremony (chanoyu) gatherings.
Jo-an is a chashitsu (tea house) and inscribed as a National Treasure
Interior view of a tea room
Tai-an (待庵), the only extant chashitsu designed by Sen no Rikyū, representing his concept of wabi-cha. Located in Myōki-an in Ōyamazaki, Kyoto (National Treasure)
The Golden Tea Room (MOA Museum of Art)