The document provides information about churches as places of worship for Christians. It defines a church as both the physical building where people worship as well as the community of Christians. It describes some of the key roles of Christian leaders like priests and ministers, and notes that the Pope is the leader of the Catholic Church. The document outlines the main roles of leaders which include praying, celebrating mass, teaching, and helping the community. It also lists and describes some of the main parts of a Roman Catholic church like the altar, font, pulpit, and nave. Diagrams are included to illustrate these parts.