Once the most densely populated place in the world, this island is now a ghost town.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

On Japan's Tashirojima Island, cats are king.

An exquisite tunnel of cascading flowers.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

The collection of ceremonial and cultural objects spans many countries and hundreds of years.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

An abandoned stretch of highway, deteriorating next to the operational one.

This schoolhouse for Black American children is one of the oldest remaining in southeastern Ohio.