Weissenfels Castle ("White Cliff Castle;" German: Schloss Weissenfels, Italian: Castello Fusine, Slovene: Grad Bela peč) is a castle ruin above the settlement of Bela Peč (German: Weissenfels, Italian: Fusine in Valromana), near Rateče in the extreme northwest corner of Slovenia. The ruins are located almost exactly on the tripoint (5,7 km from it) between Slovenia, Austria, and Italy, lying just barely (46°30'6.79" N 13°38'41.65" E) on the Italian side of the border.