Saint Paul's Church National Historic Site is a United States National Historic Site located in Mount Vernon, New York, just north of the New York City borough of The Bronx. The site was authorized in 1978 to protect Saint Paul's Church from increasing industrialization of the surrounding area. Saint Paul's Church is one of New York's oldest parishes and was used as a military hospital after the American Revolutionary War Battle of Pell's Point in 1776. The 5-acre (20,000 m2) cemetery surrounding the church is also within the historic site and contains an estimated 9,000 burials dating from 1704.