Alhambra, Sala de las dos Hermanas

Occurs on arch jambs at entrances to east and west side chambers of the Sala de las Dos Hermanas. Colours of the graphic are approximately correct, but originals have alternating green and honey-brown 8-rosettes. A similar mosaic remains on the floor between the arch jambs at the entrance to the Mirador de Lindaraja. This is now much worn away, and little of the original colour is left.

• Growth dynamic build of this pattern.
• Random dynamic build of this pattern.
• Structured dynamic build of this pattern.
• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 22.5°.
• Contains one square.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• Contains one regular 16-pointed star polygon with vertex angle of 45°.
• There are 8 non-regular reflective tiles (including 2 kites).
• 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 703 polygons.

1. Photo by David Wade: SPA 1209 (Alhambra, Sala de las Dos Hermanas, Spain) from [wadei] (1354-62AD, 755-63AH)
2. Fig 8.4 from [ww]
3. Page 41 and 53 (Alhambra, Sala de las Dos Hermanas, Spain. The colours from photo but preserving symmetry) from [escher]
4. Plate 3 (c) (Alhambra, Sala de las Dos Hermanas, Spain. West wall in The Hall of the Two Sisters) from [abas]
5. Vol 2, page 285 (Royal Palace, Fez, Morocco. Detail of door) from [paccard]
6. Vol 2, page 288 (Royal Palace, Marrakesh, Morocco. Detail of door) from [paccard]
7. Vol 2, page 398 (Dar Beida, Marrakesh, Morocco. Ceiling panel) from [paccard]

• Wade photo SPA 1209

• Escher's Alhambra tiling pattern

v54