This is one of the Washington Post's "40 more maps that explain the world." For now, I'll just leave it here for possible future reference.
"This map shows each Japanese city that was bombed during World War II, an American city of equivalent size, and the percentage of the city estimated destroyed by the bombings. All Americans learn about the two atomic bombs the U.S. dropped on Japan at the end of the war, and we're starting to become more aware of the firebombing campaigns that wiped out much of Germany, including civilians. But we are nowhere near confronting the U.S. firebombing of Japan, which killed several times as many people as the atomic bombs and devastated Japan's wooden-constructed cities. By the time the war ended, 30 percent of the residents in Japan's largest 60 cities were homeless."