1.
entrance step, threshold step in a genkan
The raised wooden or stone edge at the boundary between the lower entrance area (tataki) and the elevated floor in a Japanese genkan. This is where people sit to put on or remove shoes.
Cultural note
The 上がり框 marks the boundary between the outside world and the living space in a traditional Japanese house. Stepping up from the 三和土 (earthen entrance floor) onto the 上がり框 symbolizes entering the home proper.
In modern homes, the step is typically 15-20 cm high, though older homes may have steps of 30 cm or more. Reducing the step height is a common barrier-free renovation.