This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

In paradise, feral pigs have claimed an island all to themselves.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

Stalactites and stalagmites in a beautifully lit cave.

A beautiful geyser under environmental threat.

Its buzzing collection honors vibrator history.

Stroll through a wonderland of stupendous moss-covered trees.

Private collection of art inspired by cabinets of curiosity.

Take a drunken tour inside the world's largest known geode.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Outsider Art Community.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

Arlington Cemetery exhibit dedicated to death and grieving.

An underwater city for the dead.

One person's lost luggage is another person's treasure.