Earthquake and firebombing both gutted the Low City
The Great Kantō Earthquake of 1 September 1923 struck at midday as cooking fires burned. The fires it set killed far more people than the shaking, including a firestorm that killed tens of thousands who had fled to the open ground of the Honjo Clothing Depot. On the night of 9–10 March 1945, American incendiary raids burned the same eastern plebeian districts and killed on the order of 100,000 people, so the old merchant-and-artisan Low City was destroyed twice within one generation.