Tradition says that the first church in this place was built on the ruins of a pagan temple from the 10th century, but the present church was built at the end of the 15th century. The church was expanded and restructured by voivode and the starost of Płock, Andrzej Sieprski in 1569. It was destroyed by fires in 1630 and 1648, and transformed in the 18th century. After the fire of 1794, it was rebuilt only in 1844. At that time, a south porch was built, and the treasury adjacent to the north wall of the chancel was demolished. During World War II the church was converted into a grain store. In the 50s of the 20th century it was thoroughly renovated after the war.
It is a gothic church, orientated, made of brick with erratic stones and millstones. It consists of one nave with a narrower chancel ended straight and a massive, four-storey, square tower. A chapel was added to the southern wall of the nave in 1569 and a porch in the 19th century. At present, only the church tower has preserved the original style features. It is decorated with irregularly arranged windows and plastered blendes, it is supported by two buttresses.
Website wikipedia.org, Kościół św. Wita, Modesta i Krescencji w Sierpcu.