Alhambra, Generalife and Albayzin, Granada

The Alhambra remains the finest surviving example of Islamic palatial architecture in Europe, recognized by UNESCO in 1984. Built by Nasrid sultans in the 13th and 14th centuries, its intricate stucco, vibrant tilework, and water fountains create serene beauty across 26 acres. It draws over 2.7 million visitors annually, outperforming #2's Works of Antoni Gaudi in cultural significance and offering an immersive journey into Moorish art.