The world’s largest underwater sculpture is found just off the coast of Nassau.

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

A 1950s eccentric's vision of Eden preserved as a hiking trail.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

The only remaining historic maritime signal station in the United States.

Built for television, this statue now serves as an unlikely memorial to a fireman who died on 9/11.

For nearly 200 years the same family has harvested ice from a small pond in eastern Maine.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

An elderly widow still operates the incredibly detailed model railroad she and her husband built by hand.

Stone monument honoring a town founder has a witch-boot shaped stain and a curse to go with it.

A monument marks the beginning of the longest north-south road in the United States.

Explore the dark underground corridors of this graffiti-covered former military fortification.

The world's largest reflecting pool is just two centimeters deep.

This unique preservation is one of the only taxidermies in the world made with real whale skin.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.

The struggle of a small Dutch island against the sea.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Plans for this local observation tower were debated for so long, the allocated funds lost value and the design had to be changed.

The last Viking king of Denmark is buried inside the crypt of this cathedral.

This historic orchard contains Northern Europe's largest collection of paradise apple trees.

These old World War II fortifications have been transformed into an unusual equine attraction.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.