A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

A modern zoetrope on the New York City subway.

Elevated freight railway turned wildly successful urban park.

This innocent-looking townhome is actually a subway exit.

The site of the deadly Triangle Shirtwaist Factory Fire.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

'Cause the fence start shaking, the earth was quaking.

Celebrating the transformation of trash into objects of beauty.

A trash dump made beautiful by nature's power.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

A toxic ghost town sitting atop a massive coal fire.

A historic coal mine that doubles as a museum and tourist attraction.

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

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

An antiquated German apothecary on Chicago's North Side.

The 606 is a decade in the making.

The largest earthwork effigy in the world.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

An abandoned relic of the city's failed experiment with below ground transit.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.