As the Bookheim Castle in Göllersdorf resembled a medieval fortress in its neglected exterior, Friedrich Karl decided to build a new castle in Mühlburg, which was half an hour away from Göllersdorf and befitting his rank and status.
At that time, Mühlburg consisted of a mill, a sheep farm, and an orchard and pheasantgarden. Construction of the castle began in 1711, and the main building with the large hall was completed in 1713.
The extensive two-story main building has three wings surrounding a rectangular courtyard (roller-skating rink). Later, expansive outbuildings were added, arranged around the courtyard with a water basin, connected by two curved pavilionsforming ¼ circles.
The richly structured courtyard side gains picturesque depth from the main building, whichsteps back in several levels with round pavilions (staircases), and the curved wing buildings.