Ah, the Alhambra. To quote Wikipedia, “The Alhambra (Arabic: الحمراء = Al-Ħamrā’; literally “the red”) is a palace and fortress complex of the Moorish monarchs of Granada, in southern Spain (known as Al-Andalus when the fortress was constructed), occupying a hilly terrace on the south-eastern border of the city of Granada. It was the residence of the Muslim kings of Granada and their court, but is currently a museum exhibiting exquisite Islamic architecture. “
The Alhambra and it’s gardens (Generalife) are “the thing” to see in Granada. It is one of those places where you fill up your memory stick or kill your battery (or in the days of film, blow through all your spare rolls) before you even get to the good stuff. And of course your photos don’t do the place justice. It was recently in the running to be one of the new “7 wonders of the world” (didn’t win). You are wise to book your tickets at least a week ahead of time, as the hundreds of people who were up at 6am to wait in line for a meager allottment of released tickets found out. 
These abstract designs are based on math — there is no beginning and no end, which invokes the Universe. Note of interest: M. C. Escher’s visit in 1922 inspired his following work on regular divisions of the plane after studying the Moorish use of symmetry in the Alhambra tiles.
Inside the palace, water was also used for aestetics as well as to moderate the environment. I found the design and function of this particular courtyard fascinating. In the summer, the air was drawn across the water where it cooled. The fine wooden lattice (filigree) on the windows above allowed the air to circulate, cooling the inside (it also afforded the women the discretion required of them – ugh – but still allowed them to observe the goings on). In the winter, the sun warms the walls and the water, making the courtyard itself a warm retreat, and again the lattice circulates the air, this time warming the inside.
There are a couple of other parts to the complex, like a castle built by Charles V because he had to have something cool up there too, but I was too tired to see them. You have to walk A LOT and you take in so much intriguing beauty that it is just exhauting. I spent close to 5 hours wandering. There were hundreds of old folks on bus tours there – I’m talking old-old with bad feet and everything. And honestly, I don’t think I’ve ever seem so many exhausted old people who looked so happy. No grumpy old men waiting on benches while their wives looked around and no purse-lipped old ladies unhappy about this or that. Nope, everyone was beaming and obviously satisfied. But tired. Including me.

