The magic's in the hole!

New York City's smallest piece of private property.

Home to items never before seen by the public.

A picture-perfect town, perfect for blowing up.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Elevated freight railway turned wildly successful urban park.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Hidden beneath the streets of London is a secret subway that only carried mail.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

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

A walk through the historic city center, under the streets of Seattle.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This hauntingly stark structure is a relic of an industrial past.

One of the final concrete ships built before World War II is now a crumbling breakwater.