In the Middle Ages, cathedrals and great churches throughout Western Europe were fitted with a peculiar architectural feature known as a Holy Ghost hole: a small circular opening in the roof that symbolized the entrance of the Holy Spirit into the midst of the congregation. At Pentecost, these Holy Ghost holes would be decorated with flowers, and sometimes a dove figure lowered through into the church while the narrative of Pentecost was read. Holy Ghost holes can still be seen today in European churches such as Canterbury Cathedral.