6Alhambra, Spain
Nestled in the rolling hills of Granada, the Alhambra is a stunning blend of medieval Islamic architecture and European design. This fortress-palace complex was originally constructed as a small fortress in 889 AD and later converted into a royal palace in 1333 by Yusuf I, Sultan of Granada. The Alhambra’s intricate Islamic art, breathtaking gardens, and the fusion of different cultural influences make it a unique testament to the sophistication of Moorish rule in Spain.