Shōwa

Two-storey concrete shop of 1927 on Nanokamachi in Yamagata City, built for a gunpowder merchant; the first concrete shop in Yamagata, with stone-like walls.

A plain board-floored shed of about 1943 at a working silk works in Tsuruoka, Yamagata, where finished silk was checked by north light. Registered in 2024.

The 1940 office and preparation wing of the Uzen Kenren silk-scouring works in Tsuruoka, with a 140-mat winding room and stepped gabled roofs. Registered 2024.

A 1929 dye room and a boiler room added about 1933, joined under sheet metal, at a working silk scouring works in Tsuruoka, Yamagata. Each keeps its own ridge vent.

This 1927 Japanese wing at Kaminoyama in Yamagata joins the west flank of a Western clinic building. Its coffered-ceilinged upper floor received guests.

Built in 1927 at Kaminoyama in Yamagata, this two-storey clinic wing carries a pediment outside yet floors its waiting rooms in tatami. Registered in 2022.

The New Storehouse of the former Enman Orimono in Yonezawa dates from the early Showa and was registered in 2020. Corner pilasters and glazed windows mark it out.

Built in 1934 on Ginza-dori in Tsuruoka, Yamagata, this concrete block pairs a stone-effect ground floor with tiled upper walls and an Ebisu medallion.

The 1934 entrance to a national silkworm station in Shinjo City: concrete piers faced in scratch tile, iron leaves between them, and thirty metres of low fence.

A 1934 timber building west of the main office where silkworm eggs were checked for disease, held at controlled warmth until hatching, and moths drawn out on time.

The only reinforced concrete building at this 1934 silkworm station, with ten cold rooms in two rows for chilling eggs and a timber truss under clay tiles.

At 93 square metres this 1934 timber building is the smallest of the ten registered here, once holding a bathroom, a kitchen and rooms for staff on night duty.

Built in 1935, the first and largest of the four rearing houses here, with a ventilation tower on the ridge and stairs down to a cool store for mulberry leaves.

Built in 1937 as the unheated house for the summer silkworm crop, its upper floor still largely as it was, with a gabled porch at the centre of the south elevation.

Built in 1937 west of the first rearing house, this timber building was warmed by boiler steam so that spring and autumn silkworm crops could both be raised here.

A 1937 heated rearing house that keeps original partitions and flooring on part of its ground floor, with stairs in the east lean-to down to a cool mulberry store.

Built in 1934 at the heart of a snow-country silkworm station, this timber office keeps its symmetrical four-room plan and now holds a free exhibition room.

Corridors running north from the main office to link every building on this 1934 silkworm station, walled against the snow, with the largest footprint of the ten.

The 1937 office of the Setcho snow-country research institute in Shinjo, Yamagata, registered in 2014, with a steep dormered roof designed for heavy snow.

A 1932 stable joined to a thatched farmhouse in Utamaru, Nagai, Yamagata, with two stalls, posts still holed for tethering bars and a low loft; registered in 2022.