The village church of St. Severus, which is only a little older than the castle, dates back to a late Gothic quarry stone building from the 15th/16th century. The current square west tower dates from 1704 and replaced the bell tower that burned down in 1693. In 1713 the vault of the church was also renewed with beams and floorboards. In the period after 1732 the church received a new altar and a new pulpit in the Baroque style. In 1751 "everything" including the sky was "painted brightly" and in 1766 a new organ was installed.
The Krottorf church received its current appearance through a renovation in 1836. The structural remodeling carried out in the course of the renovation of the church roof included, among other things, raising the surrounding walls by 5½ feet and enlarging the windows, which were given high pointed arches in keeping with the character of the building. The current interior of the church was completely redesigned in 1888/89 by Gustav Kuntzsch, Institute for Church Art, Wernigerode, and replaced the baroque furnishings.
In the interior of the Krottorf church there are gravestones from the 16th and 17th centuries.
Source: Wikipedia