All historic sites
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36 sites · page 1 of 2
Former 4th Division Headquarters (MIRAIZA OSAKA-JO)
旧陸軍第四師団司令部庁舎（MIRAIZA大阪城）
The former headquarters building of the Imperial Japanese Army 4th Division, erected in 1931 on the Honmaru (inner bailey) of Osaka Castle. Constructed in Romanesque revival style with public donations totalling 1.5 million yen to commemorate the enthronement of Emperor Hirohito, the reinforced-concrete building was completed simultaneously with the reconstruction of the Osaka Castle main tower. After the 4th Division relocated in 1940 and the building survived wartime air raids without major damage, it served successively as the Central District Army HQ, US occupation forces facility, Osaka City Police HQ, Osaka Prefectural Police HQ, and the Osaka City Museum (1960–2001). Reopened in October 2017 as the commercial complex MIRAIZA OSAKA-JO, the building retains its striking military-Romanesque exterior — including corner turrets, scratch-tile cladding, and a symmetrical winged facade — making it one of the finest surviving examples of Showa-era military architecture in Japan.
Kobe Air Raid Site
神戸大空襲跡
The site of devastating strategic bombing raids on Kobe, Japan's sixth-largest city and a major port and shipbuilding center. From January 1945 to the end of the war the Kobe area suffered some 128 air raids, large and small, with the two most destructive strikes on March 17 and June 5, 1945, collectively destroying 56% of the built-up area, killing about 7,500 civilians by the official count (over 8,000 by other estimates), and leaving more than 500,000 homeless.
Maizuru Naval District Headquarters (JMSDF Maizuru District HQ)
舞鶴鎮守府跡（舞鶴地方総監部）
One of the Imperial Japanese Navy's four major naval districts (鎮守府), established on 1 October 1901 at Maizuru Bay on the Sea of Japan coast. The first commander was Vice Admiral Tōgō Heihachirō, later the hero of Tsushima. Responsible for the Sea of Japan coast of Honshū (as of 1940, from Yamagata to Shimane Prefecture), the district was downgraded to a fortified port (要港部) in 1923 under the Washington Naval Treaty, restored to full naval district status in 1939, and served as a critical logistics, training, and coastal defense hub throughout the Pacific War. Now the headquarters of JMSDF Maizuru District (海上自衛隊舞鶴地方総監部), with several Meiji-era buildings preserved as Japan Heritage sites.
Maizuru Red Brick Park (Maizuru Red Brick Warehouses)
舞鶴赤れんがパーク（舞鶴赤レンガ倉庫群）
A complex of twelve red brick warehouses built between 1901 and 1921 for the Imperial Japanese Navy's Maizuru Naval District (Maizuru Chinjufu), used as munitions depots, torpedo stores, and arsenal warehouses. Eight of the twelve buildings were designated National Important Cultural Properties in 2008. Five warehouses were renovated and reopened in 2012 as Maizuru Red Brick Park, a tourism and cultural facility. The site is part of the Japan Heritage "Four Cities of Former Naval Ports" designation (2016), distinct from the nearby Maizuru Repatriation Memorial Museum which focuses on postwar repatriation rather than naval infrastructure.
Maizuru Repatriation Memorial Museum
舞鶴引揚記念館
A memorial museum in Maizuru, Kyoto Prefecture, commemorating the 664,531 Japanese military personnel and civilians repatriated through the Port of Maizuru between 1945 and 1958, primarily from Soviet forced-labor camps in Siberia. In 2015, 570 items from its collection were inscribed on the UNESCO Memory of the World Register.
Osaka Army Arsenal
大阪砲兵工廠
The largest army arsenal in Japan, producing artillery, ammunition, and armored vehicles.
Akashi Air Raid Site (Akashi Park)
明石空襲跡（明石公園）
Akashi Park in Akashi City, Hyogo Prefecture preserves memorials to the devastating 1945 air raids that targeted the Kawasaki Aircraft Akashi Plant. Six raids between January and July 1945 (seven by U.S. records) killed 1,496 people and destroyed over 11,000 homes, reducing about 61% of the urban area to ashes.
Akeno Army Flying School
明野陸軍飛行学校
The Imperial Japanese Army's premier fighter pilot training center, established in 1921 as a branch of the Army Aviation School and independent from 1924. Located in Mie Prefecture, the school specialized in aerial gunnery and air combat tactics, producing Japan's top fighter aces including Tateo Kato of the famed "Kato Hayabusa Squadron." Today the site is JGSDF Camp Akeno, home to the Ground Self-Defense Force Aviation School and the Akeno Aviation Memorial Hall.
Former 16th Division Headquarters (Seibo Jogakuin)
旧陸軍第十六師団司令部庁舎（聖母女学院）
The former headquarters of the Imperial Japanese Army 16th Division, completed in 1908 in the Fukakusa district of Fushimi-ku, Kyoto. Designed by the Army Ministry and constructed by Matsumura-gumi, this two-story red-brick building with a copper-plate roof is one of the finest surviving examples of Meiji-era military architecture in Japan. The 16th Division, recruited from the Kyoto region, gained lasting notoriety for its role in the Nanjing Massacre of December 1937 and was later virtually annihilated during the Battle of Leyte in 1944–45. After the war, the building and surrounding military grounds were transferred to the Catholic educational foundation Seibo Jogakuin in 1948, where it now serves as the main hall of Kyoto Seibo Gakuin. Designated a Nationally Registered Tangible Cultural Property, the building retains its imposing classical facade with a columned entrance and triangular pediment, and still bears traces of black camouflage paint applied during wartime air-raid precautions.
Former IJA 10th Division Headquarters Site, Himeji Castle
姫路第十師団司令部跡
The headquarters site of the Imperial Japanese Army 10th Division (鉄兵団, "Iron Division"), established on 1 October 1898 within the eastern grounds of Himeji Castle, Hyogo Prefecture. The 10th Division recruited soldiers primarily from Hyogo, Okayama, Tottori, and parts of Shimane prefectures. Its first commander was Lieutenant General Prince Fushimi Sadanaru. The division compiled a distinguished and ultimately tragic combat record spanning every major conflict of modern Japan: the Russo-Japanese War (Battles of Hsimucheng, Liaoyang, Shaho, and Mukden), the Manchurian Incident (1931), and the Second Sino-Japanese War — where it suffered a serious reverse at the Battle of Taierzhuang (March–April 1938), the first major Chinese victory of the war and a devastating blow to the myth of Japanese invincibility. In 1944, the division was transferred from Manchuria to the Philippines under the 14th Area Army and was virtually annihilated during the Battle of Luzon in 1945. At its peak the Himeji garrison comprised over 100 military buildings across the castle grounds, including the division headquarters on the eastern side, barracks for the 39th Infantry Regiment to the southwest, a garrison hospital, and ammunition depots. The devastating American firebombing of July 3–4, 1945 destroyed nearly all military structures, though Himeji Castle's main keep miraculously survived. Today only two original military buildings remain: the red-brick former weapons warehouse (now the Himeji City Museum of Art, a Registered Tangible Cultural Property built in 1905) and the former division commander's residence (now the Junshin-kai headquarters).
Former Sanadayama Army Cemetery
旧真田山陸軍墓地
Japan's first and largest former Imperial Japanese Army cemetery, established in 1871 in Tennoji Ward, Osaka. The site contains over 5,100 gravestones and a memorial ossuary holding more than 8,200 remains of soldiers who died in conflicts spanning from the Satsuma Rebellion (1877) through the Pacific War (1945), making it an unparalleled repository of Japan's modern military history.
Harima Shipyard (Aioi Works)
播磨造船所
Harima Shipyard in Aioi, Hyogo Prefecture was one of Imperial Japan's key wartime shipbuilding facilities. Acquired by Suzuki Shoten in 1916, it grew from 250 to over 20,000 workers during WWII. Its Matsunoura plant, built in 1943-44 under Navy directive, mass-produced wartime standard ships (戦時標準船) using assembly-line methods, completing 163 vessels totaling 136,490 gross tons — ranking first among modified E-type builders. On July 28, 1945, approximately 30 US carrier aircraft bombed the shipyard, killing 39 people.
Himeji Castle — The Miracle Survival in the 1945 Air Raids
姫路城（白鷺城）― 姫路空襲と天守閣の奇蹟
Himeji Castle, Japan's finest surviving original castle and a UNESCO World Heritage Site, miraculously survived the devastating July 3-4, 1945 firebombing that destroyed over 63% of Himeji city. An incendiary bomb pierced the top floor of the main keep but failed to detonate — an unexploded dud that was reportedly carried down the steep stairs by an army ordnance officer the following morning. The castle's survival, in dramatic contrast to the destruction of Nagoya Castle (May 14, 1945), stands as one of the most remarkable preservation stories of WWII. Residents had camouflaged the brilliant white walls with netting dyed black, and B-29 radar operators reportedly misidentified the moat as a lake, inadvertently sparing the castle from the heaviest bombing. These multiple coincidences — radar misidentification, an unexploded bomb, and courageous human action — combined to preserve this irreplaceable National Treasure.
Kawanishi Aircraft Takarazuka Factory
川西航空機宝塚工場
Major wartime aircraft factory of the Kawanishi Aircraft Company in Takarazuka, Hyogo Prefecture, which produced the N1K Shiden/Shiden-Kai fighter and components for the H8K Emily flying boat. Heavily bombed on July 24, 1945, the site was demolished in 1949 and is now the Hanshin Racecourse.
Kawasaki Aircraft Akashi Plant
川崎航空機工業明石工場跡
The Kawasaki Aircraft Akashi Plant was the largest aircraft engine manufacturing facility of the Kawasaki Aircraft Industries Co., Ltd., producing the Ha-40 liquid-cooled engine that powered the Ki-61 Hien ("Tony") fighter. Established in 1940 with nearly 38,000 workers at its peak, the plant manufactured approximately 11,000 engines before being 90% destroyed by a devastating B-29 raid on January 19, 1945 — the first major air raid on Hyogo Prefecture. The site is now occupied by Kawasaki Heavy Industries' modern Akashi Works.
Kyoto Imperial University — F-Go Nuclear Research Project
京都帝国大学理学部（F号研究）
Site of the F-Go Project (F号研究), the Imperial Japanese Navy's secret nuclear weapons research program conducted at Kyoto Imperial University from 1943 to 1945. Led by physicist Bunsaku Arakatsu, the project pursued uranium-235 separation via ultracentrifuge technology. The team included future Nobel laureate Hideki Yukawa. The project never achieved a working weapon before Japan's surrender.
Kyoto Museum for World Peace, Ritsumeikan University
立命館大学国際平和ミュージアム
A university peace museum in Kyoto examining imperial Japan, wartime violence and the experiences of victims. Renewed in 2023, it includes a Kyoto gallery of works by fallen art students.
National Air Raid Victims Memorial Tower & Himeji Peace Museum
太平洋戦全国戦災都市空爆死没者慰霊塔・姫路市平和資料館
Located atop Mount Tegara in Himeji, this 26.75-meter memorial tower — erected in 1956 — is Japan's only national-level monument dedicated to all civilian air raid victims across 113 war-damaged cities. A large relief map of Japan is surrounded by pillars inscribed with each city's air raid dates and casualty figures. The adjacent Himeji City Peace Museum preserves artifacts and testimonies from the June 22 and July 3-4, 1945 Himeji air raids that killed over 500 people and destroyed 76.7% of the city.
Osaka Castle Underground Bunker
大阪城地下壕
An underground tunnel complex built beneath the grounds of Osaka Castle in 1944–1945 as an air-raid command post for the Imperial Japanese Army Central District (Chūbu Gunkanku). The tunnels are reported to have totaled roughly 300 meters in length and are said to have been dug by civilian laborers working around the clock; a surviving section about 60 meters long and 2 meters high has been confirmed. A ninomaru-side entrance remains visible today at the foot of the dry-moat wall, though the site is generally closed to the public.
Peace Osaka (Osaka International Peace Center)
ピースおおさか（大阪国際平和センター）
A peace museum established in 1991 by Osaka Prefecture and Osaka City within Osaka Castle Park, dedicated to preserving the memory of the devastating Osaka air raids of 1945. The museum documents over 50 American bombing raids that killed more than 10,000 civilians (about 15,000 by some counts) and destroyed vast sections of Japan's second-largest city. Renovated and reopened in April 2015 with modern interactive exhibits including a replica air raid shelter and projection-mapped bombing simulations.
Sakai Air Raid Site
堺大空襲跡
Site of the devastating firebombing of Sakai City on July 10, 1945, when 116 B-29 bombers dropped approximately 13,000 incendiary bombs (778.9 tons) over ninety minutes, burning about 62% of the old city area. Sakai City's figures record 1,860 deaths, more than 18,000 houses burned and some 70,000 people left homeless; another tally gives 1,370 dead. Today, the Sakai Peace Tower in Daisen Park and multiple memorial stones throughout the city commemorate the victims.
Tomogashima (Yura Fortress Battery Ruins)
友ヶ島（由良要塞 砲台群跡）
A group of four uninhabited islands in the Kitan Strait between Wakayama and Awaji Island, fortified from 1890 as part of the Yura Fortress system to defend the western entrance to Osaka Bay. The Imperial Japanese Army built five artillery batteries with modern guns on the main island of Okinoshima over a 16-year period. Designated a restricted military zone and erased from maps during WWII, the fortress was never used in combat as war shifted to aerial warfare. Abandoned after 1945, the overgrown brick-and-stone battery ruins — especially the iconic Third Battery — have earned Tomogashima the nickname "Japan's Castle in the Sky" (Laputa). Now part of the Setonaikai National Park.
Ukishima Maru Victims Memorial
浮島丸殉難の碑
A memorial monument in Maizuru, Kyoto Prefecture, commemorating the victims of the Ukishima Maru Incident of August 24, 1945, when a Japanese Navy transport ship carrying Korean repatriates exploded and sank in Maizuru Bay just nine days after Japan's surrender, killing 524 Koreans and 25 Japanese crew members. The cause — whether an American mine or deliberate scuttling — remains disputed to this day.
Wakayama Air Raid Site
和歌山大空襲跡
Site of the devastating July 9, 1945 firebombing of Wakayama City by 108 B-29 bombers that dropped over 800 tons of incendiary bombs, destroying more than half the city, killing 1,208 people, and burning Wakayama Castle — a designated National Treasure — to the ground.