In Roman architecture, a tablinum was a room in a domus generally situated on one side of the atrium and opposite to the entrance; it opened in the rear onto the peristyle, with either a large window
The tablinum of the House of Menander (Regio I), Pompeii
A tsubo-niwa is a type of very small garden in Japan. Tsubo-niwa have been described as "quasi-indoor gardens", and are a key feature of some traditional Japanese homes, such as the machiya. They are
Tablinum
…Similar systems may be used to create a cool, breezy public roofed space between two public squares. Tsubo-niwa – a similar traditional Japanese architectural element Windcatcher - an architectural element used to create cross ventilation and passive cooling…
A tsubo-niwa is meant to be seen from indoors. Note sliding glass doors.
Straight-on view of the same garden. Note shitaji or renji windows, water basins, lanterns, and shade-loving plantings, including ferns, Soleirolia soleirolii, and a moss lawn.
The courtyard garden of a former geisha house (okiya) in Kanazawa, Ishikawa. The trees are covered with straw to protect them from the snow.
Courtiers around a tsubo-niwa, illustration from The Tale of Genji, Heian period (c. 1130)