At the outermost edge of the ceiling fresco in the Marble Hall of the Upper Belvedere two Turkish slaves eke out their existence among allegories of princely virtues. The young Austrian artist Franz Kapfer positions large mirrors exactly underneath these pictures of lamentation and tyranny, on a floor covered with blood-red foil. A purist lattice structure rises up between the mirrors like an abstract „castrum doloris“. In it Kapfer sees both a „Wunderwürdiges Kriegs- und Siegslager des Prinzen Eugen“ (Wondrous War and Victory Encampment of Prince Eugene), as well as the silhouette of a Turkish tent.
