Colmberg is a municipality in the district of Ansbach in Bavaria in Germany. Colmberg is the site of Colmberg Castle (Burg Colmberg), built in the 13th century and purchased in 1318 by Duke Frederick IV of Nuremberg. The town is located in Nature Park Frankenhöhe.Notable residentsKarl Amson Joel, a textile merchant and grandfather of American musician Billy JoelTwin towns Wartenburg, Saxony-Anhalt