What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

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

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Illegal drag racing two stories beneath Chicago’s streets.

Where most of the world's flypaper was made.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The origin of the Nixon tapes is rooted in technological incompetence as much as secrecy.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

An exotic wildlife habitat right off The Strip.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

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

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The romance of early commercial flight still fills this Art Deco destination.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

Burping, gurgling geothermal mud pots by the Salton Sea.

No one knows the origin of this small town’s unique name.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.