It is a kind of Japanese windows. As the name implies, part of the backbone of the wall, which is made out of split bamboo and wood bamboo is left uncoated on purpose, leaving it as a window. It was used for tea room and sukiya-zukuri (one type of Japanese residential architectural style) in the past.
Karakami paper was conveyed from China, Tang dynasty. During Muromachi period, many temples and tea rooms used it as fusuma (sliding door), and they started calling the fusuma paper “karakami paper”. Today, it is still widely used for folding screens and accessories to fully demonstrate the cultural atmosphere of Kyoto.
“Shoji” is a door, window or room divider consisting of translucent paper over a frame of wood which holds together a lattice of wood or bamboo. The difference of “Yukimi Shoji” is that a piece of glass is placed in the middle part (at eye level while sitting), then another piece of small movable shoji (magoshoji) is attached to the inner side. You may enjoy the scenery of the garden while staying inside the room.