The last week of Lent is known as Holy Week. It is when Christians remember the last week of Jesus' life and is the most important time in the Christian year. There are many church services and processions.
Palm Sunday marks the start of Holy Week. It reminds Christians of the journey Jesus made into Jerusalem, on a donkey, to celebrate the Jewish festival of Passover (Pesach). Jesus chose a donkey to show that he had come in peace. Many people welcomed Jesus by shouting, waving palm branches and throwing branches down in the path of the donkey. They hoped that Jesus was the Saviour who the Bible had promised.
Palm Sunday is both a happy and sad day. Christians are happy because they are singing praises to Jesus but also sad because they know Jesus died less than a week after his arrival in Jerusalem.
In churches on Palm Sunday Christians are given small palm crosses made from palm leaves. Left over palm crosses are kept for a special church service on the first day of Lent, the following year, when they are burnt (Ash Wednesday). This ash is put on people's foreheads.
Read about Maundy Thursday.