Ye ole' Church. Once a place of divine worship and sanctuary, always a place of divine worship and sanctuary.

Once the virus became public, the old church quickly became a sanctuary from the infected. A promised plot of land free of infection, free from cares and peace of mind. No one is sure why infected have yet to breech the ancient walls. Perhaps it's divine protection. Or perhaps it's the smell of rotting corpses in the graves around the church that the infected smell to keep them away. No one knows for certain, but theories are always brewing amidst the people inside.

Remember, the old church keeps you safe and so you must keep it safe. The doors will remain shut on you if you bring the infection inside (are bitten). (Mr. Mercer is exception to this) The church will also be unable to use if you are bringing with you a horde of zombies. (Like if they're chasing you)