In 1502, Leonardo da Vinci sketched out a design for what would have been the world's longest bridge at the time -- 280 meters (918.6 feet). Although the bridge itself was never built, engineers at the Massachusetts Institute of Technology have tested the design to see if it would work.
원문출처 : https://www.cnn.com/style/article/leonardo-da-vinci-bridge-scn/index.html
원문출처 : https://www.cnn.com/style/article/leonardo-da-vinci-bridge-scn/index.html