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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

A daily replay of the experiment that proved the rotation of the Earth.

This beloved marketplace mascot poops money and grants good luck.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

Austin’s nonprofit-run graffiti park where street art is meant to be painted over.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

"We Seceded Where Others Failed."

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

A park full of outsider art, created by college students studying outsider art.

Step inside Lucy, the world's largest "elephant."

The land is home to swimming ponies and a legendary 18th-century treasure.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

A field of nothing but boulders which resembles a giant's gravel driveway.

It would take 35 firetrucks to fill this enormous glacial pothole.

This national landmark is also home to a massive treehouse.

Abandoned blast furnaces are an enduring reminder of Scranton's once booming iron business.