The second is Ise-Jingu Shrine and Atsuta Jingu-shrine, chosen for their deep relationship with the imperial household and possession of the three sacred treasures in which deities reside, and the third is Heian-jingu Shrine or Meiji-jingu Shrine despite the lack of history.
2つ目・3つ目は、天皇家に縁の深い神宮を選んだもので、三種の神器を神体とする伊勢神宮と熱田神宮と、後は歴史はないが平安神宮か明治神宮。