Secrets of the Alhambra
The myth of the deliberate mistake
A common story says the Nasrid craftsmen introduced deliberate errors into their tilework out of religious humility. No known historical evidence supports it. The irregularities you can see are explained by hand-cutting, adapting patterns to corners and later restorations — and the real story of the Alhambra’s geometry is more interesting.
On site
Where
In the Court of the Myrtles and, more generally, wherever there are tiled dados (zellige) in the Nasrid Palaces.
What to look for
On any tiled dado, look at the edges and corners, where a repeating pattern has to stop or turn. Small cuts and adjustments there are the traces of real craftsmanship.
Requires Nasrid Palaces ticket
The legend
Nasrid craftsmen deliberately introduced a mistake in every pattern, because only God is perfect.
What the evidence says
No known historical source — Nasrid texts, contracts or later documentation — records such a practice in the Alhambra. The idea circulates as a modern popular story told about many Islamic crafts; it deserves respect as a story, but not the status of history.
What the evidence shows
The Alhambra’s tilework displays an extraordinary repertoire of plane symmetries. Since the mathematician Edith Müller’s study of 1944, scholars such as Branko Grünbaum and Rafael Pérez Gómez have discussed how many of the 17 plane symmetry groups can be identified there. The answer depends on the criteria — whether colour is counted, how restorations are treated — so the popular claim that “all 17 groups are there” should be read with caution.
What you can actually see
Real irregularities exist: hand-cut pieces vary slightly, patterns are adjusted where they meet corners and edges, and some areas have been restored or replaced over the centuries.
Sources
- Edith Müller. Gruppentheoretische und strukturanalytische Untersuchungen der maurischen Ornamente aus der Alhambra in Granada (1944)
- Branko Grünbaum, Zdenka Grünbaum, G. C. Shephard. Symmetry in Moorish and other ornaments (1986)
- Rafael Pérez Gómez (Universidad de Granada). Studies on the geometry and symmetry groups of the Alhambra mosaics