A grove of colossal man-made flowers built to collect the sun's rays.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

This rare polygonal meeting house is rumored to be built in a circle so that the devil has nowhere to hide.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

To find the "unicorns of the deep" you've got to go downstairs.

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

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

A military museum and library dedicated to the citizen soldier.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

These pretty kitties killed and ate as many as 135 railway workers.

This historic hotel invented the chocolate brownie.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

A hollow cement depiction of time's inexorable effect on the human body.

The palatial McDonald's that inspired Wesley Willis.

The faint remains of a Polish news empire still linger.

One of the last functioning antique elevators in Chicago.

Odd, decrepit fountain honors Chicago author who had mixed feelings about his hometown.

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

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.