St. Peter the Apostle, New Castle, DE

On April 15, 1806, the land at the corner of Union and Harmony Streets was purchased where a year later a small wooden church was constructed, then a brick church shortly thereafter. Saint Peter's remained a mission church for many years until a pastor was briefly assigned from 1847 - 1848 and has remained a parish church since 1858.

Upon became the first bishop of the new Diocese of Wilmington, the Most Reverend Thomas A. Becker describes Saint Peter's as much in decay and presenting a sad appearance in 1868. At that time, it was determined that the old church building was too unsafe, so construction began on the present church in 1870. Bishop Becker dedicated the church on May 27, 1876 while Rev. Benjamin Keiley was pastor; both men would later become successive bishops of the Diocese of Savannah. The bell tower was added in 1896.

Saint Peter's School was erected in 1906 and run by the Sisters of Saint Francis of Philadelphia. The church was extensively renovated and rededicated in 1911, and the present stained glass windows were added in 1926. In 1950, the new high school building built, and in the 1960s construction began on a new convent and grade school building. In the early 2000s, the convent building was converted into a new Pastoral Center, and an elevator as well as a new double staircase was added to the church.