Registered Tangible Cultural Properties of Japan

Maekawa returned to his own Okayama site in 1971 with struck concrete instead of glass: a lattice facade over an open ground-floor colonnade, base-isolated in 2004.

Kunio Maekawa's first government building, completed 1957 on the site of Okayama Castle, registered in 2024. Piloti, raised corridor, black curtain wall.

A 1919 timber judo hall at Okayama Asahi High School, built for the elite Sixth Higher School. Springs in the floor gave it bounce, and it survived the 1945 raid.

A cut-stone gate from 1900, the year the Sixth Higher School opened, with a 1,032-meter wall around the Okayama campus. Both can be seen from the street.

A 1930 reinforced-concrete book store beside its 1902 brick twin at Okayama Asahi High School, its cornices and windows matched so the pair reads as one.

An 1902 brick book store at Okayama Asahi High School, the elder of two fireproof towers, banded with cornices and iron-grilled windows. It survived the 1945 raid.

Built in 1927 at the centre of a Kurashiki school campus, this timber hall still hosts judo and kendo practice. A rare surviving prewar budojo, registered in 2007.

Built in 1909 as a compost shed for Okayama's agricultural school, this small brick building carries a thatched roof on timber trusses. Registered in 2007.

Built in 1922 at Okayama University's Shikata Campus, this gate raises four red brick piers on granite bases, crowned with Secession-style capitals and copper lamps.

A 22-square-metre timber lodge of 1922 beside the main gate of Okayama University's Shikata Campus, roofed in scalloped natural slate on an irregular hexagonal plan.

Built in 1911 as the guardhouse of the Imperial Army's 17th Division headquarters, this timber building is now a free exhibition room on Okayama University's campus.

The Okina Bridge of 1926 in Tsuyama, Okayama, a small concrete bridge on the old Izumo Highway, has Art Deco-style newel posts that grace the historic street.

At the centre of Oku Kōmyōen, a Hansen's disease sanatorium on Nagashima, this 1941 timber hall bears three arched windows and was listed for its striking design.

This 1939 wooden schoolhouse, Kōmyō Gakuen, taught children at the Oku Kōmyōen sanatorium on Nagashima, a rare surviving school built inside such an institution.

This 1949 granite pier at Oku Kōmyōen faces the mainland across a strait, the boat landing that linked the Nagashima sanatorium before the bridge of 1988.

This 1938 concrete cable incline at Oku Kōmyōen lifted supplies from the wharf to the Nagashima sanatorium, back when everything reached the island by boat.

On high ground at Oku Kōmyōen stands a tiny 1943 concrete hōanden that once enshrined the emperor's portrait, a rare survivor at a Hansen's disease sanatorium.

The main building of the Okutsuso inn at Okutsu Onsen, Okayama, built around 1935, has a gabled front, lattices and deep eaves at the heart of the spa streetscape.

The Okutsu No. 1 Covered Conduit is a 122-metre reinforced-concrete channel faced in coursed stone, built in 1932 on the upper Yoshii River and registered in 2006.

The Okutsu No. 1 Aqueduct is an 18-metre reinforced-concrete rigid-frame bridge of 1932 that carries the power station's canal water across the Kirotani-gawa in Okayama.