Da Vinci's Iconic Bridge Recreated in Ice

One of Leonardo da Vinci's most stunning engineering plans is getting a decidedly chilly welcome to the modern world. Students in the frigid hinterlands of Finland plan to recreate one of the Renaissance man's many iconic sketches: a massive stone bridge spanning the Bosphorus River. Leonardo da Vinci, who lived between 1452 and 1519, is perhaps most famous for painting the "Mona Lisa." But the polymath also made impressive contributions to the fields of astronomy, engineering and anatomy.