A long-lost mural by the late painter Taro Okamoto was shown to the public for the first time ever Saturday in Tokyo, following a yearlong restoration.

The "Myth of Tomorrow," measuring 5.5 meters by 30 meters on seven panes of concrete, was unveiled in the square in front of NTV headquarters in the Shiodome area after its initial vivid colors, which had faded during the more than three decades it was missing in Mexico, were restored.

The giant piece depicts the moment of an atomic explosion and a skeleton burning under a mushroom cloud while others flee. Some artists and critics call it a masterpiece equivalent to Okamoto's famous "Tower of the Sun" sculpture for the 1970 World Exposition in Osaka.