This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

Follow the steps, and this roadside artwork will teach you how to dance.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The world's longest known cave system.

This replica of the Greek structure is in the heart of Nashville.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

A local scoured more than 1,000 acres for stone to create his masterpiece.

An abandoned theme park with a strange and tumultuous past.

Prehistoric animals decorate this popular outdoor park.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

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

Home to items never before seen by the public.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

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

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Hear the quietest sound from across the dome.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.