Kleinostheim is located in the Lower Franconian district of Aschaffenburg on the western edge of the Spessart. The church tower of St. Laurentius rises up in the middle of the village. The sacred building is comparatively young. The groundbreaking ceremony took place on March 15, 1948. The currency reform on June 21, 1948 seemed to destroy the project. Only the willingness to sacrifice of many people from Kleinostheim and the enormous number of voluntary works made the completion possible.