Detail of the ancient Walls of Avila in Spain from outside the city. Completed between the 11th and 14th centuries, they are the city's principal historic feature.

Detail of the ancient Walls of Avila in Spain from outside the city. Completed between the 11th and 14th centuries, they are the city's principal historic feature.

Download this HD photo of fortified wall, observation tower, day, and tourism by Getty Images (@gettyimages)

Calendar outlinedPublished on CameraNIKON CORPORATION, NIKON D800
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