Moraine Lake’s beautiful color comes from the light reflecting off rock flour at the bottom of the lake. (Wikipedia)

Old Faithful’s eruptions last 1 1/2 to 5 minutes, expel up to 8,400 gallons of boiling water, and can be as high as 184 feet. (Yellowstone National Park)





Fifty-six pillars and a pair of small triumphal arches surrounding a plaza and fountain make up the humbling World War II Memorial in Washington, D.C.