Morning Glory Pool (Hole), Wyoming, USA
And last but not the least gorgeous hole is The Morning Glory Pool located in the Yellowstone park. This mesmerizing thermal pool got its name in 1880 thanks to its morning glory flower look alike. The hot pool is brightly colored by the heat-loving algae growing in it. And yet, because of thoughtless tourists, throwing litter and coins into the hole, the pool was in danger of losing its colors. It affected the temperature greatly and put existence in jeopardy causing bacteria making the yellow color move from the outskirts into the center. Today, you’ll have to take a little walk along the Upper Geyser Basin to make it to the prettiest Morning Glory Hole, and it’s worth it.