Explore a Turn-of-the-Century Parisian Landmark on the Back of a Drone

Drone photography: If you're not against it because of the Constitution, you're against it because of how over-hyped it is. But in the hands of enterprising architecture fans, unmanned airborne cameras are also letting us explore some of the most important structures ever built from entirely new angles. Today, it's Paris' 1897 glass-and-steel icon, the Grand Palais.