Alhambra, Sala de los Abencerrajes

Stucco frieze round all four walls of the main hall of the Sala de los Abencerrajes, just above the arches.

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains two squares.
• Contains one regular octagon.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• There are four non-regular reflective tiles.
• The tiling satisfies the interlace condition and has two finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 431 polygons.

1. Photo from Nick Crossling (Alhambra, Sala de los Abencerrajes, Spain, Colour as in the original) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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