Bishop Stephan Ackermann sings together with carol singers and the mayor of Trier, Wolfram Leibe, during the nationwide start of the Dreikoenigssingen (lit. three wise men singing) event in the cathedral in Trier, Germany, on December 29, 2017. On the occasion of the Epiphany, on January 6, children collect for other children in need.
Photograph by Harald Tittel for DPA via AFP