Trinity Church is located at 74 Trinity Place in Manhattan. The Underground uses it to hide things inside a cache which opens when someone lights certain candles. The cache also displays 3 symbols (a star, a cross and an E-like shape) indicating the symbols which are shown to Abdul to give access to an underground hallway. Another Underground member had the combination of the candles tattooed on his arm.
The Manhunter visited the church to open the cache and recovered the hidden Module.
- Trinity Church (Manhattan) (Wikipedia link)