This 3D model of a historical Dutch windmill near The Hague was made with a DJI Phantom 3 Professional drone and Agisoft Photoscan. Full explanation (in Dutch) here: http://www.dronewatch.nl/2015/10/25/met-je-drone-een-3d-model-maken-van-een-oer-hollandse-windmolen-zo-doe-je-dat/