Corpus Christi procession in Krakow, Poland on 31 May, 2018. Catholics celebrate Corpus Christi during the Holly Mass and processions in different parishes in the city. The procession starts with a priest carrying a monstrance under a canopy. The faithful follow him, singing religious hymns, while young girls dressed in white or traditional regional dresses scatter flower petals along the route. Corpus Christi is a Catholic moveable feast commemorating the Transubstitution. (Photo by Beata Zawrzel/NurPhoto via Getty Images)