Barack Obama is the first sitting U.S. president to visit Hiroshima, the scene of the atomic bombing ordered 71 years ago.

But over those seven decades, many prominent figures, including former U.S. President Jimmy Carter, Mother Teresa and rock legend Jimmy Page, have paid their respects, touched by the gravity of what such a weapon can do to mankind.

Carter visited Hiroshima Peace Memorial Park in an unofficial capacity in May 1984 — three years after he left the White House.