German-style coffee and cake, just like Oma used to make it.

This ambitious restaurant celebrates the culinary traditions of the Ozarks before 1870.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

America's silhouette includes 100 square miles of wilderness jutting into Canada thanks to an old mapmaking error.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Sniff the Titan Arum's rotting flesh.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

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

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

The last SR-71 ever constructed.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.