This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

An inconspicuous footbridge beloved by San Diego locals.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The ghost town that ended up on Ebay.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

A one-of-a-kind collection of a unique medium.

The legendary building that needed ghostly approval before being built.

Lie in a hammock where George Washington stood.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

The saddest little diner in New York.

Three-story slide through the New Museum.

A psychedelic labyrinth on the San Francisco bay.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

An everyday Jackson Heights bodega conceals a Mexican seafood paradise.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

“Invented in Key West, Perfected in Brooklyn."

This abandoned subway station can still be seen on regular commuter trips.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

A dilapidated dock tells the story of Titanic's missed arrival.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A miniature rainforest is growing inside of a Midtown Manhattan office building.