Semana Santa is the Holy Week celebrated in Spain leading up to Easter Sunday. During this time, there are parades through the streets in cities and towns across Spain, each with their own traditions. Semana Santa must fall between March 22nd and April 25th each year. It is made up of the seven days before Easter, beginning with Palm Sunday, and is a time when people in Spain commemorate Jesus' crucifixion through rituals like burning incense and carrying palm or olive branches in church.