36.4 MB (2.2 MB compressed)
4368 x 2912 pixels
37.1 x 24.6 cm ⏐ 14.6 x 9.7 in (300dpi)
PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
Medieval city walls. These walls were built in the Middle Ages to defend the city of Avila against invaders. Photographed in Spain.
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