DAVID R. FRAZIER / SCIENCE PHOTO LIBRARY DAVID R. FRAZIER / SCIENCE PHOTO LIBRARY
Aqueduct, Lucca, Italy. This brick aqueduct, which was designed by Lorenzo Nottolini, was built from 1823-1832. It has some 400 arches that carry water over a distance of around 4 kilometres to the city of Lucca, providing a clean supply of drinking water.
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