Elevated freight railway turned wildly successful urban park.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Try not to get slimed in Tribeca.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

The fairy tale castle of the "fairy-tale king."

Dramatic river bend surrounds a natural red-rocked pedestal.

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

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

An emerald-green grotto just a short trip from Austin.

Most-visited and most-photographed slot canyon in the American Southwest.

A crumbling hospital from the 1850s on Roosevelt Island.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

Built in just a little over a week this preserved bunker was created to protect our most attractive POTUS while he was on vacation.

Former villa and estate of James Deering developed to preserve native tropical forests.

An abandoned water sports stadium that has become a haven for graffiti and decay.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

A mysterious castle built as a monument to lost love.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

The largest freshwater lake in the Florida Keys.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.