Today is a holiday and a Holy Day in Germany. It is Pfingsmontag, commonly known as Whit Monday or Pentecost Monday.
As far as Catholic liturgy goes, one of the most impressive parts of it, at least for me, is the Entrance Procession. Here is a video of the entrance procession for the Mass of Pentecost Monday celebrated by the Chapter of Canons (Domkapitel) of Cologne Cathedral in Germany (Kölner Dom).
The procession for Pentecost Sunday is pretty impressive, too.