A frieze
This frieze of Alhambra (Granada, Spain) would be a frieze of type *22∞, if there wasn't the switching over/under of the crossing that breaks the symmetry.
© matematita
The image belongs to the sections...:
Pma2 (Symmetry)
Decorations of walls and façades (Anthology of images)
Decorations of walls and façades (Symmetry)
Breaking symmetry (Symmetry)