What the Hiroshima Hypocenter Is
The Hiroshima Hypocenter marks the precise location directly beneath the detonation of the world’s first atomic bomb used in warfare on August 6, 1945. It is outside modern Shima Hospital at 1-1-23 Otemachi, Naka Ward, in central Hiroshima.
The explosion occurred approximately 580–600 meters above the site. Today, the modest marker is a place for reflection, education, and remembrance. The Hypocenter is open to the public 24 hours a day, free of charge (Japan Travel; Atlas Obscura; Japan Travel Note).
History
On the morning of August 6, 1945, at 8:15 a.m., the atomic bomb “Little Boy” detonated approximately 580–600 meters above the Hypocenter, releasing immense heat, blast winds, and radiation. The initial blast killed an estimated 70,000–80,000 people instantly. By the end of the year, fatalities had reached approximately 146,000 due to radiation and injuries (mad-traveller.com; aboutjapan.japansociety.org).
The original Shima Hospital was annihilated in the blast, and all staff and patients were killed instantly. The current hospital was rebuilt on the same site, standing as a testament to Hiroshima’s recovery and resilience (Japan Travel).
What to See
The Hypocenter Plaque and Shima Hospital
A modest plaque embedded in the sidewalk outside Shima Hospital marks the Hypocenter. Its inscription describes the events of August 6, 1945, in Japanese and English. Visitors often leave flowers or folded paper cranes there as symbols of peace and remembrance (Japan Travel; Atlas Obscura).
The plaque sits amid modern buildings, shops, and restaurants. Its quiet presence contrasts with the city’s daily life and highlights the distance between past devastation and present renewal (Atlas Obscura).
A-bombed Trees
Within a two-kilometer radius, over 160 “A-bombed trees” (hibaku jumoku) survived the blast and regrew. One notable weeping willow is just 370 meters away. Many of the trees lean toward the Hypocenter, representing survival and hope (Mainichi).
Nearby Memorials
The surrounding Peace Memorial Park includes the Children’s Peace Monument, dedicated to child victims of the bomb; the Cenotaph for the A-bomb Victims, which contains the names of known victims; the Peace Bell, which visitors may ring for peace; and the Peace Memorial Museum, with exhibits on the bombing and its aftermath.
Practical Visiting Information
Hours and Admission
- Hypocenter plaque Open 24 hours, year-round.
- Peace Memorial Park Open at all times.
- Hypocenter and park admission Free; no tickets are required (Trip to Japan).
- Peace Memorial Museum Open 8:30 AM to 5:00 PM, with extended summer hours. Closed Dec 29–31 (Nomadic Matt).
- Museum admission 200 JPY for adults; discounts are available for students and seniors.
Location and Directions
The Hypocenter is a short walk southeast from the Atomic Bomb Dome and adjacent to Hiroshima Peace Memorial Park (Japan Travel).
- By tram Take tram line 2 or 6 from Hiroshima Station to Genbaku Dome-mae; the journey takes about 15 minutes.
- By bus The Meipuru-pu sightseeing loop bus stops at Peace Memorial Park (Japan Guide).
- On foot It is about a 20-25 minutes’ walk from Hiroshima Station.
Accessibility and Amenities
Wheelchair-accessible pathways run throughout the park and Hypocenter. Public restrooms and benches are available, and coin lockers can be found at the museum and tram stations. The Peace Memorial Park Rest House has restrooms and tourist information (Travel Yes Please). Cafés and shops nearby offer local specialties.
Tours and Events
The Hiroshima Volunteer Guide Association (HVGA) provides free tours in English and other languages, bookable in advance (HVGA). Audio guides are available at the Peace Memorial Museum for a small fee.
The annual Peace Memorial Ceremony takes place on August 6th and includes moments of silence and peace declarations. Additional educational events are occasionally held (Japan Travel Note).
Safety
Scientific studies confirm that Hiroshima’s radiation levels have returned to natural background levels and pose no risk to visitors. The city is safe and thriving (Travellers Worldwide; Travel With The Greens).
Photography and Conduct
Photography is permitted outdoors at the Hypocenter and the Atomic Bomb Dome. Some indoor museum exhibits restrict photography, and flash and tripods may be restricted inside the museum.
Maintain a quiet, respectful demeanor, especially around memorials. Eating and drinking are not permitted in memorial areas. Modest attire is encouraged, and silent reflection is customary. Leaving flowers or origami cranes is a common gesture of remembrance.
International Visitors
Most signs are in Japanese and English; staff and guides often speak English. Free public Wi-Fi is available in the park and museum. The currency is the Japanese yen (JPY); ATMs and currency exchange are available at Hiroshima Station and hotels. For emergencies, dial 110 for police or 119 for fire or ambulance services.
Tips for Visitors
Spring and autumn offer pleasant weather. Summer can be hot and humid, while winters are mild (The Broke Backpacker).
Comfortable shoes, water, sun protection, and tissues or a handkerchief may be useful. The visit can be emotionally powerful: many visitors find the Peace Memorial Museum’s personal narratives and artifacts moving, so allow time to process the historical weight of the site (JapanTravelNote; Traveler Bibles).
Cafés and restaurants nearby serve Hiroshima-style okonomiyaki and other local dishes. Virtual tours and photo galleries are available through the Hiroshima Peace Memorial Museum website (Hiroshima Peace Memorial Museum). The Audiala app is also suggested for audio guides.
Nearby Places and Suggested Visit
- Atomic Bomb Dome (Genbaku Dome) A UNESCO World Heritage Site less than five minutes’ walk from the Hypocenter (History Skills).
- Peace Memorial Park The Hypocenter is just outside the park’s main area, making it easy to include on a walking tour (Japan Travel Note).
- Aioi Bridge The original aiming point for the bomb, located nearby (Intrepid Scout).
The Hypocenter is often visited as part of a self-guided or guided tour that includes the Atomic Bomb Dome, Children’s Peace Monument, Cenotaph for the A-bomb Victims, Peace Bell, and Peace Memorial Museum (Intrepid Scout; Japan Travel Note). A typical visit to the park, including the Hypocenter, Dome, and museum, takes 1–2 hours (HVGA).
FAQ
Is the Hiroshima Hypocenter safe to visit?
Yes. Radiation levels are at natural background levels, and the area is safe to visit.
What are the Hypocenter’s visiting hours?
The site is open 24 hours a day, year-round.
Is there an admission fee?
No. The Hypocenter and Peace Memorial Park are free to access.
Are guided tours available?
Yes. Tours are available through the Hiroshima Volunteer Guide Association and other providers (HVGA).
Is the site wheelchair accessible?
Yes. The park and museum accommodate wheelchairs and mobility aids.
