A narthex is the entrance or lobby area of a church, typically located at the western end, opposite the main altar. It serves as a transitional space between the exterior and the nave, often enclosed by columns, walls, or doors. In early Christian and Byzantine architecture, the narthex functioned as a gathering space for catechumens or penitents. Today, it provides a welcoming area for congregants before and after services, and may include bulletin boards, seating, or information kiosks.  

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