Drones are everywhere these days, and so are the bird's-eye photos they take of cityscapes and countrysides. But when Swiss aviator Walter Mittelholzer took to the skies in the 1920s and '30s, armed with a camera and a restless spirit of adventure, aerial photography was largely unheard of.
원문출처 : http://www.cnn.com/travel/article/walter-mittelholzer-photos-africa-middle-east/index.html
원문출처 : http://www.cnn.com/travel/article/walter-mittelholzer-photos-africa-middle-east/index.html