The Ommegang of Brussels (French: Ommegang de Bruxelles, Dutch: Ommegang van Brussel) is a traditional Ommegang, a type of medieval pageant, celebrated in Brussels, Belgium. Originally, the Ommegang was the largest lustral procession of Brussels, which took place once a year, on the Sunday before Pentecost. Since 1930, it has taken the form of a historical reenactment of the Joyous Entry of Emperor Charles V and his son Philip II in Brussels in 1549. As such, it joins the tradition of the great processions of notable riders and giants that are found everywhere in Belgium and northern France.