Emperor Naruhito will formally declare his ascension as Japan's 126th monarch in front of about 2,000 leaders and representatives from over 170 countries and regions at the Imperial Palace on Tuesday.

The Sokuirei Seiden no Gi (enthronement ceremony) will represent the old tradition that has been carried on over 1,000 years, but at the same time, it will be closely watched by people around the world as the beginning of the new era led by a new generation of the imperial family.

Emperor Naruhito ascended the chrysanthemum throne on May 1 following the abdication of his father, Emperor Emeritus Akihito, who was the first to be enthroned as the symbol of "the state and of the unity of the people" under the postwar Constitution.