Atsuta Jingu (official shrine website)

Atsuta Jingu's official website is the shrine's own account of itself, one of Shinto's most important sanctuaries, traditionally said to enshrine the sacred sword Kusanagi no Tsurugi, one of the three imperial regalia of Japan. Its strength is direct custodial authority, nobody is better positioned to state the shrine's own ritual calendar, structures and current practice than the institution itself, and a shrine of this standing maintains the page as an accurate public record rather than casual promotional copy. Its limit is that the sword itself has never been examined or photographed by an outside party in the modern era, so the shrine's account of its presence and identity rests on unbroken tradition rather than independent verification, and a claim treating the sword's continuous physical presence as historically documented fact rather than the shrine's own maintained belief needs a source that engages that gap directly, since this page does not.