St. Paul's Chapel is an Episcopal chapel and oldest surviving church building in Manhattan.
Eventually, the Clock Ghost realized Egon Spengler had something to do with his rapid aging. It kidnapped baby Egon and took it to the clock tower of St. Paul's Chapel. The other Ghostbusters tracked the ghost down and confronted it in the tower. While it was trapped, Egon was returned to normal. However, the clock face was damaged.