If you’re driving along the Columbia River Gorge, you might blink twice at the sight of a towering circle of concrete monoliths rising from the rolling sagebrush. It looks like Stonehenge somehow ...

The structure is made of white marble blocks that range in thickness from 15’ at the base to 18" at the monument’s top. The marble changes color at 150 feet; that marks the spot where construction ...

Built in two phases in 1848 and 1884 and subsequently dedicated in 1885, the Washington Monument — a marble-faced granite obelisk that honors the first U.S. president, George Washington — opened to ...