In their quest for a perfect patch of green, homeowners devote countless hours to mowing, edging, feeding and weeding.

FORBES: The Green American Dream

By the shore is a small patch of lighter green surrounded by dark forest.

BBC: The perfect trip: Switzerland

In 1900, a couple of prospectors spotted what appeared to be a patch of nice green pasture on a distant hillside, just right for grazing their horses.

BBC: Journey into the Alaskan wild