Shōwa

The Chishinkan Storehouse in Tsuyama is a tall two-storey kura whose lower walls match the street wall. Its date is disputed, and it was moved and reset in 2022.

The Chishinkan Wall in Tsuyama is a 26.3 m tiled earthen wall of 1937, with board skirting below white plaster, keeping a samurai street front. Seen from the road.

An early-Showa garden wall at Tsuji Honten in Katsuyama, 47 meters long, on a concrete footing, with cement tiles on one run and fired pan tiles on the other.

Tsuyama's 1933 city hall below the castle ruins, a symmetrical concrete building with a five-tier tower, now a local history museum. Registered 2006; open.

The 1930 director's residence at Nagashima Aiseien, Japan's first national Hansen's disease sanatorium, pairs a Western wing with Japanese rooms. Registered 2019.

At the heart of Nagashima Aiseien stands its 1930 administration building, with Expressionist touches. Since 2003 it has held the History Museum. Registered 2019.

On Nagashima's north shore, the 1930 reception building was where new arrivals first entered, examined and disinfected, before a week's confinement. Registered 2019.

Beside the bathhouse at Nagashima Aiseien stands the 1930 laundry, where residents washed bedding and clothing as assigned work. Built in concrete. Registered 2019.

The 1930 Hide Bathhouse at Nagashima Aiseien still has ceiling steam vents, a skylight and, rare for prewar Japan, hot-water showers. Registered in 2019.

Notre Dame Hall East Building in Okayama, a 1929 Antonin Raymond design built as a convent, holds the university chapel behind a grid of colored glass windows.

Notre Dame Hall Main Building in Okayama is a 1929 Antonin Raymond school with unbroken eaves, original pivot windows and wartime paint traces, registered 2007.

The Hayashibara Museum of Art Main Building (1963) was Maekawa Kunio's first museum, with galleries looping a bamboo courtyard and walls of over-fired brick.

Hexagonal meter house of 1939 on Mount Handa, Okayama, its concrete walls tiled to look like header-bond brick in a simpler copy of the 1905 meter house.

An early Showa brewing well and washing floor at a sake brewery in Ushimado, Okayama: a 1.2 m stone-lined well and a 4 by 2.2 m mortar floor. Registered 2007.

A red-brick chimney of about 1932 at a sake brewery in Ushimado, Okayama: 15 m tall, English bond with iron bands, lettered Senju. Nicknamed the red chimney.

Built in 1928 on the Endo River in Kagamino, Okayama, this 18-metre concrete gravity weir feeds Heisakubara Power Station. Note its curved crest and parallel gates.

This 51-metre concrete settling basin, built in 1928 beside the Endo River weir in Kagamino, Okayama, strips silt from water bound for Heisakubara Power Station.

Built in 1928 in Kagamino, Okayama, this 8.2-metre overflow weir on the Endobara River has a 7.5-metre apron cast in one piece to keep falling water from scouring.

A slender 55-metre concrete settling basin from 1928 in Kagamino, Okayama, fitted with a mid-wall sediment sluice and stone walls against debris from the slope.

Onbara Dam in Kagamino, Okayama, a 94-metre buttress dam of 1928, is the oldest surviving one built for power in Japan and the first to use Mononobe's quake theory.