👉 Sacristy is a religious institution or building in medieval and early modern Europe that served as a place for the vestry (the governing body) to hold its meetings. It was usually located in a church, but could also be located elsewhere such as a monastery or a convent. The term "sacristy" refers to the vestry of a church, which is where the members of the congregation meet and discuss matters of faith and governance. Sacrifice and prayer were central to