Shōwa

The Former Yamada Family Residence Shinzashiki, a 1953 guest wing in Nakano, Nagano: an anteroom and 8-mat room, a crooked alcove lintel and a cusped window.

A small 1940 munamon gate in Matsushiro, Nagano City, 1.9 metres across, built as the entrance to a stele honouring the Matsushiro domain scholar Yamadera Jozan.

Registered in 2005, this 1949 timber schoolhouse in Iida, Nagano, runs 64 metres under a tiled gable, its hipped porch fronting a building villagers raised by hand.

Registered in 2005, the north wing of Iida's Kinehara school holds seven 1949 classrooms behind ranma-topped sliding sashes, and a 2.25-metre rear corridor.

The Former Yokouchi Clinic of 1932 in Matsumoto, Nagano, joins a Western-style clinic with a columned porch to a Japanese house and keeps its consulting room.

Kinshi Hall, the former south building of Nagano High School, is a timber school of 1939 in Nagano City whose tiled centre rises into a pyramid-roofed tower.

The Kumeji Bridge in Nagano City, built in 1933, is an open-spandrel concrete arch 46 metres long spanning the Kumeji Gorge of the Sai River with stone-faced ribs.

A small early-Showa stable in Tomi City, Nagano, formed by a lean-to projecting from the east gable of the silkworm rearing house and kept for riding horses.

An early-Showa fermentation storehouse at Sakai Meijo brewery in Chikuma, Nagano, pairing a mud-walled body with a Western king-post roof truss. Registered 2003.

Built in 1938 in Sakuho, Nagano, Sakae Bridge is Japan's longest-span prewar concrete Lohse arch, designed by Nakajima Takeshi, who pioneered the form.

A sukiya-style ryokan wing designed in 1932 by Arata Endo, who assisted Frank Lloyd Wright. It shaped the modern Japanese inn and now hosts guests as Honenmushi.

A 1942 tea house on school grounds in Iizuna, Nagano. Two rooms share one mizuya so a whole class could practise, and its sukiya detailing won registration in 2016.

The Shinano Education Association center in Azumino, Nagano, is the old education hall of 1929 moved from Nagano City, symmetrical under a mansard roof with dormers.

A two-storey wooden Western-style hall built in 1938 in Iida, Nagano, with a mansard gable, geometric panels, dormers and clapboard walls, still in daily use.

A two-storey earthen storehouse built in 1938 behind the Shimoina Education Hall in Iida, which once held school records dating back to the late Edo period.

Ueda Sericultural College's 1929 wooden auditorium on Shinshu University's Ueda campus, with triangular entrance windows and mulberry, cocoon and moth motifs.

The main house of the Suyama family, lacquerware makers in Kiso-Hirasawa, Nagano, was raised in 1933 with an upper floor carried over the street on projecting beams.

The East Storehouse of the Suyama family in Kiso-Hirasawa, Nagano, raised in 1932, has namako-kabe lower walls, white plaster above and a roof shared with its pair.

Quietly facing Lake Suwa in Nagano, Suwako Hotel Geihinkan is a Registered Tangible Cultural Property completed in 1928 by the Katakura silk dynasty. This wooden two-story villa pairs a Spanish-style exterior with a hybrid interior — Western rooms downstairs, Japanese rooms upstairs — finished with Italian marble and Taiwanese cypress. Discover one of early-Showa Japan's finest private villas, alongside its neighbour Katakura-kan.

Located in Suwa City, Nagano Prefecture, the Seiko Epson Founding Memorial Hall (former Daiwa Kogyo Office) is a wooden two-story building completed in October 1945 as the office of Daiwa Kogyo Limited and registered as a National Tangible Cultural Property in February 2023. Built from timber salvaged from local agar warehouses during the postwar shortages, it is valued both as a vivid record of emergency postwar construction and as the birthplace of Japan's modern wristwatch industry. Now open to the public as the Founding Memorial Hall of the Epson Museum Suwa, the building lets visitors experience the spirit of "sincere effort" championed by founder Hisao Yamazaki and trace the journey from this modest office to world-changing innovations such as the first quartz wristwatch and the first compact digital printer.