In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

Once America's longest-manned military fort, now an abandoned hulk.

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

This once luxurious Catskills resort is now a haunting ruin.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

Advice-columnist's bell tower, paid for with pennies.

The bones of an old zoo crumbling in the shadow of a new one.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

Detroit housing collective working to create an "environment for revolutionary change."

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

A Beaux-Arts triumph set to become Ford's innovation campus

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

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

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

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

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

A collection of colorful dinosaurs hidden in an actual rainforest.

A monument celebrating the idea of reaching inaccessible places.

Cuba's historical trains remind natives of their country's sugary sweet past.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Medicinal spa created with the discharge from a geothermal energy plant.

An encyclopedic collection of mammal penises.