Chashitsu

thumb|Jo-an is a chashitsu (tea house) and inscribed as a National Treasure. thumb| in its garden setting, Itsuku-shima, Chashitsu (, 'tea room') in Japanese tradition is an architectural space designed to be used for tea ceremony (chanoyu) gatherings.

Japanese portable tea room

thumb|300px|Jo-an tea house dating to the 17th century, a National Treasure of Japan is a seventeenth-century Japanese teahouse (chashitsu) located in Inuyama, Aichi Prefecture. Jo-an is said to be one of the three finest teahouses in Japan and has been in its current location in Inuyama since 1972. It was designated a National Treasure in 1951.

thumb|Hassō-an thumb|Historic interior view Hassō-an (八窓庵) is a historic chashitsu located today in Sapporo, Hokkaido, northern Japan. The name means “eight-window tea house”.