Palm Sunday is the final Sunday of Lent, the beginning of the Holy Week and commemorates Christ days before he was crucified according to Christian beliefs.
It is when Christians remember how Jesus entered Jerusalem riding on a donkey. It is called Palm Sunday because the people were so happy to see Jesus, so they took branches from the Palm and Olive Trees that lined the road.
To remember that day, Christians all over the world go to special Palm Sunday Church Services. They often receive small crosses made from Palm leaves or other local woods.
Palm branches are widely recognized as the symbol of peace and victory, hence their preferred use on Palm Sunday.
Palm Sunday is sometimes called 'Passion Sunday.'