Ancestral palace of the noble family of Hohenzollern.
Ancestral palace of the noble family of Hohenzollern, from 1192 burgraves of the imperial castle in Nuremberg, from 1415 Brandenburg, from 1701 kings in Prussia, from 1871 German emperors.
And this is Hohenzollern Castle today. First a medieval ruin, then rebuilt in the 19th century in a historicizing style.