The Washington Monument ... The marble’s color changed visibly because construction was stopped for over 20 years due to a ...

Rare, possibly one-of-a-kind video has emerged of the northern lights dancing over the National Mall and Washington Monument ... photons of light in different colors. The colors of an aurora ...

Even if you're only in town for a short trip, visiting the Washington Monument and the White House – two marble symbols of the U.S. – is a must for any first-time D.C. visitor. Standing just ...