The only surviving prototype for Buckminster Fuller's house of the future.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

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 remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

It would take 35 firetrucks to fill this enormous glacial pothole.

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

Locals call this magical moss-covered walkway the "Emerald Path."

A retired firefighter created this contraption so he and his family wouldn't die if accidentally buried alive.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

Israel's premiere solar energy research facility provides energy to nomads.

A stunning mosque owes its design to an Ottoman ruler nicknamed "the Butcher."

This dome-shaped mountain boasts amazing views and has a rich religious history.

The abandoned shell of what would have been the Jordanian royal family's summer palace.

Deep in the Negev Desert, the world's tallest solar tower looks like a sight straight out of science fiction.

On holy holidays, Israel's second president used this room atop Mount Zion as a refuge to read the Torah.

One of only three fountains created by the iconic architect Friedensreich Hundertwasser.

An autonomous community living in the southern Negev desert.

This museum explores the history of stickers and is home to RePEELed, an exhibit featuring sticker art from around the world.

This urban oasis is a marvelous meld of music and landscape architecture.

The giant birds honor two native North American species.

More gold than anywhere else, ever.

Unrepaired walls from a 1920 anarchist bomb attack.