One of the oldest living oak trees in the Southeast.

This set of rickety spaceships are prepared to give alien travelers a place to relax and go to the bathroom.

An unfinished rail tunnel that has since been used to house cheese and bats.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

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

All that's left of the quintessential "cabin in the woods."

Home of an evil witch famous within southern folklore.

Enormous lake at the bottom of a unique cave system.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Odd outsider art installations surround a Gold Rush-era ghost town.

An underwater city for the dead.

A mysterious castle built as a monument to lost love.

Where manatees are the snowbird vacationers in these balmy Florida springs.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

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

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

World's largest collection of serial killer artwork and other macabre exhibits.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A psychedelic labyrinth on the San Francisco bay.

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