Chashitsu

In Japanese tradition, architectural spaces designed to be used for tea ceremony (chanoyu) gatherings are known as chashitsu (茶室, literally "tea rooms").

The architectural style that developed for chashitsu is referred to as the sukiya style (sukiya-zukuri), and the term sukiya (数奇屋) may be used as a synonym for chashitsu. Related Japanese terms are chaseki (茶席), broadly meaning "place for tea," and implying any sort of space where people are seated to participate in tea ceremony, and chabana, "tea flowers", the style of flower arrangement associated with the tea ceremony.

Typical features of chashitsu are shōji windows and sliding doors made of wooden lattice covered in a translucent Japanese paper; tatami mat floors; a tokonoma alcove; and simple, subdued colours and style. The ideal floor size of a chashitsu is 4.5 tatami mats.

Tea houses versus tea rooms

In Japanese, free-standing structures specifically designed for exclusive tea ceremony use, as well as individual rooms intended for tea ceremony, are both referred to as chashitsu. The term may be used to indicate the tea room itself where the guests are received, or that room and its attached facilities, even extending to the roji garden path leading to it. In English, a distinction is often made between free-standing structures for tea, referred to as tea houses, and rooms used for tea ceremony incorporated within other structures.