A bizarre house filled with an astounding array of collections.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

A huge musical instrument played by the ocean.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A terrific purveyor of natural history objects and curios.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

Death road of Bolivia.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

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

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The only presidential monument to display a late POTUS's actual casket.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.