Giant granite rocks standing end-to-end like a train of circus elephants.

A museum celebrating the Victorian obsession with hair art.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Just a man taking his prehistoric pet for a stroll.

An architect's childhood fantasy treehouse made real.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

Olfactory delights in San Francisco's Botanical Gardens.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Its buzzing collection honors vibrator history.

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

A kitschy, creepy St. Louis mainstay.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A big museum full of little worlds.

Make your reservation to have coffee with some kitties.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A cemetery housing wild west legends in South Dakota.

This airfield is home to a number of retired vintage planes in various states of disrepair.