Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

A glimpse of the Pacific Northwest‘s indigenous culture in Washington, D.C.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

A spectacular tribute to statesman and philanthropist Andrew Mellon.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

A much-maligned monument to teetotalism.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The oldest arched-covered bridge in Virginia has truly withstood the test of time.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

These massive concrete balls were used to mine gold in Virginia.

The resting place of a Civil War celebrity's amputated limb.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

This plaque celebrates the sister city relationship between Fredricksburg and Fréjus.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.

On the side of a Virginia highway, a collection of monuments commemorates an 18th-century trek through the Blue Ridge Mountains.

One of the last active volcanoes on the Eastern seaboard.

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

A journey along this trail means indulging in a slice of nostalgia.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.