C30 Nyoheim Castle

At the same time in Austria, nestled within a secluded mountain range, a stark, pitch-black castle loomed atop a snowy peak. More accurately described as a towering black spire, it was encircled by concentric, high-walled labyrinths.

This was none other than the fortress of the original Dark Lord, Grindelwald, who had confined himself there.

Dumbledore materialized at the maze's entrance