I'll start with a couple of photos of a lovely courtyard that give at least some indication of the predominant architectural style.
Although the arches above are not purely circular, most of the other archwork in the Alcazar is semicircular or even horseshoe-shaped, as in the following.
A close look at these latter photos reveals that, while they are intricately patterned, they are wholly abstract, without any representational qualities.
I found myself trying to capture multiple layers of archwork--arches within arches--and perhaps partially succeeded in the following photos.
You could call these abstracts of abstracts.
Following is another shot of a portion of a room that also illustrates the intricate, abstract patterns and archwork that appear throughout the palace.
And here is a detail shot of some of that abstract work.
Perhaps this is highly stylized Arabic writing . . . and perhaps not, but it is representative of the amazing degree of craftsmanship that 650 years ago had gone into both the planning and the execution of this UNESCO World Heritage site.