The pilgrims visit the Cenacle on Mount Zion in Jerusalem to commemorate the descent of the Holy Spirit upon the apostles at Pentecost.
The Upper Room was the place in which the disciples gather to pray. There, Jesus had the last supper with His disciples and appeared to them, after He was risen. The place was also scene of another very important episode in the Bible, described in the Acts of the Apostles.
After Jesus ascended to heaven, the disciples were gathered here, behind closed doors. The Jewish feast of Pentecost, celebrated 50 days after Easter, was imminent. Suddenly, a sound like the blowing of a violent wind filled the house and tongues of fire appeared. They were all filled with the Holy Spirit and began to speak in other languages.
Next to the Upper Room, there is a Franciscan monastery. Father Wander, one of the religious of the house, explains the history of the place.