You're in luck. Landsat 8 photos are paid for by the American taxpayer, and therefore freely available. Sign up for an account here, then go nuts: http://earth

You're in luck. Landsat 8 photos are paid for by the American taxpayer, and therefore freely available. Sign up for an account here, then go nuts: http://earthexplorer.usgs.gov/ http://earthexplorer.usgs.gov/ More detail on the images: http://landsat.usgs.gov/landsat8.php http://landsat.usgs.gov/landsat8.php The Euphrates River map here, for example, is stitched together from about 15 gigs worth of raw Landsat tiles. Photoshop beware!