A man walks past the south face of Urakami Cathedral, which was destroyed by the atomic bombing of Nagasaki on August 9, 1945 and rebuilt in 1959, in Nagasaki, southwestern Japan, July 31, 2015. On August 6, 1945, the U.S. dropped the atomic bomb on Hiroshima, killing about 140,000 by the end of the year, out of the 350,000 who lived in the city. Three days later, a second atomic bomb was dropped on Nagasaki. As the 70th anniversary of the world's first nuclear attack approaches, Reuters photographer Issei Kato sourced archive images of the cities in the aftermath of the bombing and revisited the same locations today. REUTERS/Issei Kato