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One of the pair of exotic rose windows on the facade






Country:
Austria


Date: ?


Symmetry symbol: 4mm



Symmetry symbol Schoenflies: C4v



Symmetry absolute number: 5



Symmetry comment: Very rich 4mm window with dominant quasi-circular motif at 45 degrees that is itself quasi 6mm (lower threefoil missing below)

Vienna, Cathedral of St Stephen

Photograph by: http://commons.wikimedia.org/