According to the Schloss Callenberg web site "the castle became the property of Duke Johann Casimir of Saxe-Coburg in 1588, after the death of the last von Sternberg.

It served as the main seat for the Ritter von Callenberg until 1231, when the lord sold it to the Prince-Bishop of Würzburg.

He had the castle completely redesigned, a landscape garden was created and an exhibit farm added, in which silkworms were bred.

From 1893, Callenberg served as dowager house for Princess Alexandrine of Baden, the widow of Ernest II.

[2]: 24 The chapel features Gothic arches, Doric columns, Italian Renaissance parapets, medieval walls and a Baroque pulpit.

Since 1998 it has displayed the ducal art and furniture collection and since 2004 it has also housed the German Rifle Museum (Deutsches Schützenmuseum).