This is one of the most famous room in the Alhambra, one of the World Wonders.
They didn't allow the tripods in the Alhambra so I had to take 3 different exposures handheld which I blended together manually in Photoshop using the DRI technique (no HDR). The challenge was to keep the perfect symmetry while shooting handheld in low light conditions!! I think the longest of my three exposures is something like 1/4! The key point also was to keep my DSLR steady while raising my arms to shoot in order not to see the tourists' heads :)
I got lazy to write the whole description so this is the plain Wikipedia description of this room :)
The Sala de los Abencerrajes (Hall of the Abencerrages) derives its name from a legend according to which the father of Boabdil, the last sultan of Granada, having invited the chiefs of that line to a banquet, massacred them here. This room is a perfect square, with a lofty dome and trellised windows at its base. The roof is decorated in blue, brown, red and gold, and the columns supporting it spring out into the arch form in a remarkably beautiful manner. Opposite to this hall is the Sala de las dos Hermanas (Hall of the two Sisters), so-called from two white marble slabs laid as part of the pavement. There is a fountain in the middle of this hall, and the roof —a dome honeycombed with tiny cells, all different, and said to number 5000— is an example of the "stalactite vaulting" of the Moors.