Abyss Pool, West Thumb Geyser Basin, Yellowstone National Park, Wyoming
Amazingly vibrant color, more than any other single thing, is what puts Yellowstone in a league all by itself. For some unknown reason, though, the park’s collection of frequently erupting geysers gets most of the attention. Old Faithful, it seems, is as much a national landmark as the overexposed giant heads of Mount Rushmore. But seeing a column of water burst from the ground like an ordinary city fountain is every bit as exciting as it sounds. Having to wait 90 minutes or more to actually see one makes it decidedly less so.
Everywhere Once 