Click on the images to see them in close up and note how the grid adapts to different window sizes.

amazing-736875
amazing-736885
barley-field-1684052
castelmezzano-1979546
forest-438432
green-1072828
italy-2080072
lone-tree-1934897
mountains-1985027
norway-1758183
polynesia-3021072
rainbow-background-1149610
redwood-national-park-1587301
sunrise-1014711
turkey-3048299
utah-440520