After passing through the narthex you gain entrance into the baptistery. This sacred place serves as a metaphor for the baptismal identity of each of the believers.
The baptistery area has an octagonal form. The eight-sided design follows an ancient tradition dating back to the early Christian church in which the Resurrection was thought of as a new day of creation, an eighth day following the earlier seven days described in the Hebrew Testament.
The baptistery is placed at the main entrance of the church, and cannot be avoided by those who enter, reminding the faithful that baptism is frequently called the “first sacrament,” the “door of the sacraments,” and the “door of the church.”
The font is located in the center of the baptistery. Its location and size is meant to illustrate the importance of baptism in the spiritual journey. “Holy Baptism is the basis of the whole Christian life, the gateway to life in the Spirit and the door which gives access to the other sacraments” (CCC, #1213).