August 6, 1945 — 8:15am
At 8:15am on 6 August 1945, the United States B-29 bomber Enola Gay dropped an atomic bomb — Little Boy — over Hiroshima. The bomb detonated approximately 600 metres above the city. The hypocentre (the point directly below the explosion) is in the Peace Park. The temperature at the hypocentre is estimated at 3,000–4,000°C. Approximately 70,000–80,000 people died immediately; total deaths by the end of 1945 are estimated at 90,000–166,000. The city was rebuilt — rapidly and deliberately — and now has a population of over 1.2 million. The rebuilt city is everywhere around you; the preserved ruin of the Industrial Promotion Hall (A-Bomb Dome) is the single structure left standing near the hypocentre.
How to Visit the Peace Museum
The museum is the most important building in the trip. Go in the afternoon rather than the morning if possible — the light in the eastern building is better, and the morning crowds are heavier. Don't use your phone as a camera inside the main exhibition; it creates distance between you and what you're looking at. The watches stopped at 8:15, the children's lunch boxes, the shadow burned into the stone steps — these require full attention. Allow 90 minutes. Sit on the bank of the Motoyasu River opposite the A-Bomb Dome for 10 minutes before dinner. This transition matters.
Hiroshima's Food Identity
Hiroshima's two great foods — oysters and okonomiyaki — are both products of the Seto Inland Sea and the city's postwar reconstruction. The oyster beds of Hiroshima Bay produce 70% of Japan's oyster supply; the flat, sheltered water and the freshwater river inflows create ideal growing conditions. The oysters are larger and milder than Pacific-coast varieties, with a sweetness that comes from the mixed salinity. Hiroshima-style okonomiyaki (the layered version) was developed in the postwar period as a cheap, filling street food for a city rebuilding from rubble — layers of batter, cabbage, noodles, egg, and pork, cooked on a flat iron. The Osaka mixed version is older; the Hiroshima layered version is a postwar invention and has specific meaning in this city.
Nagarekawa — The Bar District
Nagarekawa is Hiroshima's compact, serious bar district — a grid of small bars, sake specialists, and whisky counters within walking distance of the Peace Park. The sake connection is direct: Saijo, one of Japan's three great sake-producing towns, is 30 minutes east by train. Many Nagarekawa bars stock Saijo breweries exclusively. A Kamoizumi sake flight here — three of the brewery's most characterful bottles side by side — is one of the better drinking experiences on this leg.