High Quality Content by WIKIPEDIA articles! St Peter`s Church is the oldest Roman Catholic parish in New York City and part of the Roman Catholic Archdiocese of New York. The church was designated a landmark by the New York City Landmarks Preservation Commission in 1965. The original church`s cornerstone was laid in 1785 and the first solemn Mass was celebrated in 1786. The cornerstone of the present Greek Revival church, designed by architects Thomas Thomas and John R. Hagarty, was laid in 1836. The existing church was completed in 1840. The address is 22 Barclay Street.