Archaeologists have deciphered inscriptions on the Cenacle walls, suggesting it was revered by Christian pilgrims in the Middle Ages. The team analyzed nearly 40 markings on the Cenacle walls, uncovering medieval graffiti from various cultures. The inscriptions shed new light on the geographical diversity and international pilgrimages to Jerusalem in the Middle Ages. The Cenacle was captured by Muslims and turned into a mosque in 1523, at which point plaster was applied to the walls, obscuring the graffiti left behind by these pilgrims.