Immaculate Heart of Mary Catholic Church is a historic church in Windthorst, Kansas, which is located in a rural area between the communities of Bellefont and Bucklin, approximately 6 miles south of Bellefont or 15 miles north of Bucklin. The church was built during c. 1911âÂÂ13 and added to the National Register of Historic Places in 1989. It is in plan and has a center steeple which rises about .