Black and white aerial photos are used as a type of map, both recreationally and for governmentally purposes. As opposed to using color photography, putting everything in black and white creates a sharper image, allowing differences (over time) to be more easily seen. These images are usually produced for government agencies, to use for GIS (geographic informational systems) - they also can be used as a sort of map recreationally, by professional photographs who wish to highlight a specific area or landmark.
This black and white aerial photo is of downtown Kansas City.
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