In 1932 Oberhof and Unterhof were incorporated into Horrenberg. After WW II the population of Horrenberg soared due to the influx of refugees. Today the once tiny village has been replaced with a modern residential community. In the center of the village, the former city hall (built in 1845) still dominates the character of the village. Since Horrenberg-Balzfeld was incorporated in Dielheim in 1972, the city hall has lost its original function. The castle hill, which is accessible again, shows little sign that it once hosted a castle. Today it serves as a place of recreation and vantage point.