Pivotal home of Nobel Prize winner Pablo Neruda.

What was once a unique system of urban elevators is turning into a mechanical ruin.

Historic medieval fortified city in southwest France.

In Egypt's expanding metro area, many of the neighbors are dead.

The largest known Ancient Egyptian obelisk.

Former laboratory of radical psychiatrist Wilhelm Reich.

This tiny patch of arid sand sits in one of the greenest states in the United States.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The world's largest rotating world.

The world's only and thus largest collection of its kind celebrates everyday wonder through simple umbrella sheaths.

Colorful boxes placed over the dead are left to rot and crumble.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Every president in history is immortalized in bronze in downtown Rapid City.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A cemetery housing wild west legends in South Dakota.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.