The sacristy is a vital architectural element in Catholic Church design, serving a crucial liturgical function. Located typically adjacent to the sanctuary, it’s a room where liturgical objects—vestments, chalices, and other sacred vessels—are stored and prepared. This sacred space facilitates the smooth running of Mass and other services. Its function reflects a key aspect of Catholic tradition: the meticulous preparation and reverence for sacred items used in worship. The sacristy's proximity to the main altar emphasizes its importance to the overall liturgical experience within the church building. It is a hidden space supporting the visible sacred space of the church.