The local history is closely connected to its fortress Burgruine Kollnburg [de], which was first mentioned in 1153 as Chalnberch.

The Kollnburgers and the Nußbergers originally belonged to the Ministerialis of the Counts of Bogen, who died out in 1242, and therefore have their diamonds in their coat of arms.

The formal structure of the coat of arms is based on the fact that the Kollnburgers showed diamonds in a split shield while the Nußbergers arranged them in line.

The crenellation at the top symbolizes the castle Burgruine Kollnburg [de], which was probably built in the 11th century as the ministerial seat of the Counts of Bogen.

The districts of Kollnburg, Bach, Baierweg, Gnad, Hochstrass, Höfen, Hornhof, Kagermühle, Karglhof, Marktbuchen, Oed, Ogleinsmais, Reichsdorf, Reisach, Sattel, Schreinermühle, Steffelhof, Tafertshof, Unterdornach, Waldhof, Weggütl, Wieshof, and Windsprach are state-recognized as resorts.