Japan's Imperial Regalia, known as the Three Sacred Treasures, consists of three important items: the Kusanagi no Tsurugi (a sword), the Yasakani no Magatama (a jewel), and the Ame-no-Murakumo no Tsurugi (another sword). These treasures symbolize the legitimacy and divine right of the Japanese Emperor to rule. They are deeply rooted in Japanese mythology and history.
The regalia is traditionally kept at the Ise Grand Shrine and the Imperial Palace in Tokyo. They are not displayed publicly and are only shown during the enthronement ceremonies of the emperor. The regalia's significance lies in its connection to the Shinto beliefs and the imperial lineage.