A much-maligned monument to teetotalism.

Look closely and you’ll notice that the color changes a third of the way up the tower.

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

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

A spectacular tribute to statesman and philanthropist Andrew Mellon.

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

There’s a hidden military meme engraved on the World War II Memorial.

An overlooked memorial honoring the local Washington residents who died in World War I.

Engraved in stone here are the signatures of everyone who signed the Declaration of Independence.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The "lovely red Vega" of the legendary record-settling pilot.

The only Leonardo Da Vinci painting in the Western Hemisphere.

After James Madison's death, his wife and former First Lady Dolley Madison lived in this yellow building near the White House.

D.C. once had its own tiny rival to the New York Stock Exchange.

A line of blue paint marks the route of the inaugural parade.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

The world’s first penitentiary, meant to be humane, drove men insane.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

Alexander Hamilton’s creation caused quite a bit of controversy.

An Irish Memorial commemorating those who perished due to potato blight.

Step into a pastel time capsule where candy is truly dandy.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.