LIDAR Map

Source :http://www.technewsdaily.com/lasers-used-to-create-3-d-model-of-new-york-city-0548/

LIDAR stands for light detection and ranging. The use of the this type of mapping technology helps provide a more detailed map of an area compared to normal arial photos. This information like in the picture above  of the New York skyline can be used to create detailed 3D representations.