Hiroshima Peace Memorial
原爆ドーム
大手町 · JP
8:15 a.m., 6 August 1945 — the iron skeleton that became a UNESCO 'negative heritage' site
Rising from the bank of the Motoyasu River in Hiroshima, the Atomic Bomb Dome is the former Industrial Promotion Hall. Only its central dome survived the Little Boy detonation 150 meters away on 6 August 1945, and in 1996 UNESCO listed it as a 'negative heritage' cultural site — a memorial of peace.
Best Season & Time
Cherry blossoms against the iron skeleton — a symbol of memory and renewal — pair with park-wide hanami
★★★★★
August 6 hosts the Peace Memorial Ceremony and lantern floating, a once-a-year solemn observance
★★★★☆
Mild weather with autumn colours and far smaller crowds than spring — ideal for unhurried photography
★★★★★
Floodlit dome at dusk with crystalline winter air; long shadows make silhouette photography distinctive
★★★★☆
Top 3 Highlights
1.The Iron-Skeleton Dome and the Marks of the Bomb
The roughly 25-meter dome stands with its copper roof stripped, its steel frame buckled, its bricks scorched. Held in place by decades of careful conservation, the structure is a 'living ruin' — a working witness to twentieth-century history.
Frame the iron skeleton against open sky from the Motoyasu River bank to the south
2.The Peace Memorial Park Composition Across the River
Kenzo Tange's 1955 Peace Memorial Park aligns the dome on the north with the Cenotaph and Peace Memorial Museum to the south. From the river's south bank you capture bridge, river, ruin and park in one frame — Hiroshima's defining peace tableau.
From Motoyasu Bridge at dusk, with the southern park bank in the background
3.Japan's First Modern Special Historic Site
Designated a National Historic Site in 1995 and, in September 2025, Japan's first modern building to receive Special Historic Site status, the dome encapsulates a century — from 1915 opening through wartime use, the bomb, and citizen-led preservation.
Photograph the north-side wall texture in midday raking light
Stories & Legends
Recommended For
Insider Tips
- 1.On 6 August the Peace Memorial Ceremony observes silence at 8:15 with bell tolls and floral offerings, and 10,000 lanterns drift down the Motoyasu River that evening; visiting a day before or after captures most of the atmosphere without security cordons.
- 2.The Hiroshima Peace Memorial Museum five minutes' walk away pairs systematic exhibits of artefacts, photos and personal effects with the dome itself, giving you the volumetric understanding of the bombing impossible from the ruin alone.
- 3.The dome perimeter is fenced for safety, but the riverside promenade on the west bank is excellent for close shots, and Aioi Bridge on the north places the camera on the original bombing target — a direct experience of the geometry of the attack.
Visit Information
- Access
- From JR Hiroshima Station, take Hiroden Tram Line 2 (toward Miyajima-guchi) for about 15 minutes to Genbaku-Dome-mae stop — the dome is one minute away. From Hiroshima Port a city bus takes around 30 minutes.
- Time Required
- 30 minutes for the dome and surroundings; 2-3 hours including the Peace Memorial Museum.
- Budget Guide
- Dome viewing is free (exterior only). Peace Memorial Museum admission JPY 200 for adults; JPY 100 for high school students. (Prices as of 2024.)
Nearby Attractions
The Hiroshima Peace Memorial Museum, five minutes' walk south, is the canonical pairing for any visit. Inside the same park, the Cenotaph for the A-Bomb Victims and the Children's Peace Monument complete the standard circuit. A 20-minute Hiroden tram ride to Miyajimaguchi extends the day to Itsukushima Shrine, the typical Hiroshima itinerary.
Go Deeper
Deeper details for those with the time to read on.
Timeline
- 1915
Display Hall Completed
Designed by Czech architect Jan Letzel, the Hiroshima Prefectural Products Display Hall completes on 5 April and opens on 15 August.
- 1933
Renamed Industrial Promotion Hall
The hall is renamed the Hiroshima Prefectural Industrial Promotion Hall and continues as a major cultural and exhibition venue for the city.
- 6 August 1945
Atomic Bomb Detonation
At 8:15:17 a.m. the United States B-29 Enola Gay drops Little Boy; only the central dome survives the blast that flattens the rest of the building.
- 1949
Peace Memorial City Construction Law
On 6 August the Hiroshima Peace Memorial City Construction Law passes, anchoring the long urban-design plan around the surviving dome.
- 1955
Peace Memorial Park Opens
Kenzo Tange's Peace Memorial Park opens, aligning the dome to the north with the Cenotaph and Peace Memorial Museum on a single axis.
- 1960
Hiroko Kazuyama's Diary
Hiroko Kazuyama, bombed at age one, dies of leukaemia at sixteen; her preserved diary becomes the spiritual source of the preservation movement.
- 1966
Permanent Preservation
Driven by national signature drives, the Hiroshima City Council votes for permanent preservation, with funds raised across the country.
- 1967
First Conservation Campaign
Professor Sato's epoxy-injection method binds over 10,000 cracks in the reinforced-concrete walls, completing the first conservation works.
- 1995
National Historic Site
On the fiftieth anniversary of the bombing, the dome is designated a National Historic Site under the Cultural Properties Protection Law.
- December 1996
World Heritage Inscription
The Mérida session inscribes the dome as a UNESCO World Cultural Heritage 'negative heritage' site, ratifying a global memory of war.
- 2016
Obama Visit
Barack Obama becomes the first sitting U.S. president to visit Hiroshima, laying a wreath at the Peace Memorial Park beside the dome.
- September 2025
Special Historic Site
The dome becomes the first modern building in Japan to receive Special Historic Site status, the highest cultural-property rank.
Detailed History
The Atomic Bomb Dome's history begins on 5 April 1915, when the Hiroshima Prefectural Products Display Hall completed in a building by Czech architect Jan Letzel, opening formally on 15 August. A reinforced-concrete structure of three above-ground storeys plus a basement in mixed Neo-Baroque-Secessionist idiom, it rose about 25 meters; Governor Sukeyuki Terada had selected Letzel after admiring his Matsushima Park Hotel. In 1919 the hall hosted Karl Juchheim's first Baumkuchen production in Japan during an exhibition by German POWs. Renamed the Commercial Exhibition Hall in 1921 and the Industrial Promotion Hall in 1933, it served as a cultural venue for art and trade fairs. From March 1944 promotion-hall operations ceased and the building served as administrative offices when 6 August 1945 arrived. At 8:15:17 that morning the B-29 Enola Gay released Little Boy targeting nearby Aioi Bridge; 43 seconds later it detonated 600 meters above ground, about 150 meters east of the building. The heat ray reached 3,000°C, and the shockwave traveling above 440 m/s exerted blast pressure of 3.5 million pascals. Within 0.2 seconds the three-storey main body was almost entirely destroyed, killing the thirty staff inside instantly. The central dome survived only because the shockwave struck nearly vertically, the many windows let pressure vent, and the copper dome roof — copper melting at a far lower temperature than steel — melted before the blast arrived, letting it pass through. The name 'Atomic Bomb Dome' came into use around 1951; demolition advocates were many, and weathering through the 1960s sharpened debate. The diary of Hiroko Kazuyama, bombed at age one and lost to leukaemia at sixteen in 1960, ignited a national preservation movement that the 'Hiroshima Folded Crane Society' carried for six years. The Hiroshima City Council voted for permanent preservation in 1966, with national fundraising. Hiroshima University Professor Shigeo Sato's epoxy-injection method bound over 10,000 cracks in the 1967 campaign. National Historic Site designation came in 1995, and on 5 December 1996 the Mérida UNESCO session inscribed the dome as a 'negative-heritage' site. In September 2025 it became Japan's first modern building to receive Special Historic Site status.
Cultural Significance
The Atomic Bomb Dome stands among the international category of 'negative World Heritage' sites — silent witnesses to twentieth-century catastrophe — alongside the former Auschwitz-Birkenau camp in Poland and Gorée Island in Senegal. Inscribed in December 1996 under criterion (vi) — 'directly and tangibly associated with events of outstanding universal significance' — the listing was contested in committee, with the United States expressing concern about its wartime role being framed pejoratively (it ultimately did not vote) and China abstaining over concerns that Japan's wartime responsibility might be obscured. Hiroko Kazuyama's diary, the Hiroshima Folded Crane Society that drove the preservation campaign, and Kenzo Tange's 1955 Peace Memorial Park — placing the dome as the northern terminus of the axis through the Cenotaph and the Peace Memorial Museum — together form the intersection of postwar Japanese peace education, public architecture, and citizen activism. The dome has shaped Kenzaburo Oe's Hiroshima Notes, Akira Kurosawa's Rhapsody in August, Katsuhiro Otomo's AKIRA, and many other works; President Barack Obama's 2016 visit, the first by a sitting U.S. president, reaffirmed its standing as a global symbol of peace.
Architectural Details
Jan Letzel's design fused a Neo-Baroque skeleton with Secession (Vienna) detailing in reinforced concrete, three storeys above ground and one basement, with an oval dome above the main entrance reaching about 25 meters at its apex. While the rest of the third floor was clad in steel-frame ALC, the dome alone was sheathed in copper sheet — and that material choice, a copper melting point of 1,085°C against steel's 1,538°C, allowed the heat ray (3,000°C) to melt the dome roof before the blast wave arrived, preventing internal pressure rise and saving the dome from total collapse. The reinforced-concrete walls developed more than 10,000 cracks, which Hiroshima University Professor Shigeo Sato bound in 1967 by drilling fine holes, threading perforated steel pipes, and pressure-injecting epoxy resin. Major reinforcement campaigns followed in 1989-1990, 2002-2003 and 2015-2016, and the dome stands today through a careful balance of structural reinforcement and non-restoration: a 'living ruin' preserved as it was on 6 August 1945.
