Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Museum preserving torture methods from the past.

Where beautiful signs live on forever.

A much more welcome kind of snowbird vacationer, manatees camp out in these springs every winter.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A Jenga-style cylindrical tower of books that appears to go on forever.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

A lush green oasis in the middle of Chicago.

Hot springs monkey spa in the middle of Hell's Valley.

A museum dedicated to the history and exploration of both popular music and science fiction.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Elevated freight railway turned wildly successful urban park.

An emerald-green grotto just a short trip from Austin.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

On the Oregon coast is a natural hole that seems to be draining the sea.