Shrine of the Three Kings

The Shrine of the Three Kings (German: Dreikönigsschrein or Der Dreikönigenschrein), Tomb of the Three Kings, or Tomb of the Three Magi is a reliquary traditionally believed to contain the bones of the Biblical Magi, also known as the Three Kings or the Three Wise Men. This shrine is a large gilded and decorated triple sarcophagus situated above and behind the high altar of Cologne Cathedral in western Germany.

Source: Wikipedia — Shrine of the Three Kings (CC BY-SA 4.0)