Registered Tangible Cultural Properties of Japan

Steel bridge of 1912 on the Watarase Keikoku Railway in Midori, Gunma, 40 metres long, with Dorman Long girders on a spindle-shaped granite pier by Route 122.

Steel girder bridge of 1912 on the Watarase Keikoku Railway in Kiryu, Gunma, 20 metres long, with an old road bridge and Route 122 stacked above it in three tiers.

Straight brick tunnel of 1912 on the Watarase Keikoku Railway in Kiryu, Gunma, 82 metres long, hand-dug to a section close to Japan's first railway tunnel standard.

Down platform of 1912 at Sori Station on the Watarase Keikoku Railway in Midori, Gunma, 99 metres long, with a glazed timber shelter of 1927 and hydrangeas in July.

Up platform of 1912 at Sori Station on the Watarase Keikoku Railway in Midori, Gunma, 79 metres long and ramped at each end, with a gabled timber shelter of 1929.

Single-track tunnel of 1912 on the Watarase Keikoku Railway in Midori, Gunma, 166 metres long with horseshoe brick portals, one of three Kanbai tunnels in the gorge.

Brick tunnel of 1912 on the Watarase Keikoku Railway near Godo in Midori, Gunma, with a later concrete rock shed bearing a plate on its materials and a cobble wall.

Brick tunnel of 1912 on the Watarase Keikoku Railway in Midori, Gunma, extended in 1937 with a concrete rock shed inscribed with its date and builder.

Straight brick tunnel of 1912 on the Watarase Keikoku Railway in Midori, Gunma, 27 metres long with a dressed keystone, dug through cliffs at the Seven Bends.

Brick and stone tunnel of 1912 on the Watarase Keikoku Railway west of Godo in Midori, Gunma, with a concrete rock shed and wall at its west end, near a photo spot.

Concrete flume of 1930 over the Watarase Keikoku Railway in Midori, Gunma, carried on old rails to shed rain and debris into the river, with a trumpet channel.

Short tunnel of 1912 on the Watarase Keikoku Railway at Sori in Midori, Gunma, 32 metres long with stone walls, a brick arch and a near-circular section.

Steel girder bridge of 1913 on the Watarase Keikoku Railway between Kiryu and Midori, Gunma, 30 metres long and gently bent, with an abutment rebuilt in 1948.

Steel bridge of 1912 on the Watarase Keikoku Railway in Kiryu, Gunma, 16 metres long, combining two girder types on a 1937 stone pier, close to Mizunuma Station.

Small steel bridge of 1912 on the Watarase Keikoku Railway in Kiryu, Gunma, a 15-foot standard I-beam on finely laid stone abutments just north of Mizunuma Station.

Concrete flume of 1935 on old rails over the Watarase Keikoku Railway at Sori in Midori, Gunma, built to keep weathered granite and rain off the line below.

The Ihara Sōjūrō Residence main house in Shiraichi, Higashihiroshima, is an 1871 ironcasters' townhouse. Metal fittings on its lattice recall the trade. Registered 2025.

The Ihara Sōjūrō Residence storehouse in Shiraichi is the town's only three-storey kura, built by an ironcasting family in the Taishō era. Registered 2025.

The Ihara Sōjūrō Residence detached wing in Shiraichi is a refined Meiji guest room and tea room, said to have lodged a prince. Registered 2025 as a design model.

The Ihara Sōjūrō Residence gate and wall edge an old street in Shiraichi. Its stone-stepped yakui-mon gate bears castle-style shachihoko ornaments. Registered 2025.

The complete kokuhō catalogue — browse by prefecture, period, and category.

Nationwide jūyō bunkazai — architecture, sculpture, painting, crafts, and documents.

UNESCO-inscribed cultural and natural sites across the archipelago.