Hiroshima prepares to commemorate, on Thursday, the 70th anniversary of the American atomic bomb attack on the city on Aug. 6 1945, which ripped through the city.
The service will be held at Hiroshima's Peace Memorial Park, also known as the Nuclear Dome.
Washington’s most senior official is due to attend the memorial ceremonies in the city, which is expected to be the most crowded memorial ceremony to this day with over 100 countries to send their representatives.
Government officials including foreign delegates predominantly from the US, and Japan’s PM Shinzo Abe will attend the moment of silence which will be held at 8:15am (2315 GMT), which marks the local time when the atomic bomb attack turned Hiroshima into ashes.
The atomic bomb, known as “Little Boy” was dropped on the city by Enola Gay, an American fighter pilot, in the final stages of WWII.
The explosion heated up the ground level up to 4,000 degrees Celsius, killing more than 140,000 people, causing a severe radiation exposure to its vicinity.
Just three days after Hiroshima, another Japanese city, Nagasaki, was bombed killing at least 70,000 people.
Japan was forced to surrender after the atomic bomb attacks, ending the war, however suffering its repercussions in Japanese society years on.
Washington, to this day, never officially apologised for carrying out the bombings, with majority of Americans still believing that it was “the right thing to do.”
Japan had high hopes that US President Barack Obama attends the memorial service this year, and possibly make a positive call for a nuclear-free world.