This museum houses an imposing skeleton army comprised of creatures great and small.

A museum of carnival attractions where you are invited to ride the rides.

The oldest stone house in Paris was built by its most famous alchemist.

Notorious artist squat renovated into legal studios.

Abandoned railway line circling the city of Paris.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Dramatic river bend surrounds a natural red-rocked pedestal.

An emerald-green grotto just a short trip from Austin.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Most-visited and most-photographed slot canyon in the American Southwest.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

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

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

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

A terrific purveyor of natural history objects and curios.

A psychedelic labyrinth on the San Francisco bay.