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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

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

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

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

A snapshot of the city's fascinating voodoo culture.

World's first "penitentiary," meant to be humane, drove men insane.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The western face was supposedly left clock-less to snub the Welsh.

Scary metal statues adorn some of the signature buildings of Burlington, VT.

This rare polygonal meeting house is rumored to be built in a circle so that the devil has nowhere to hide.

A massive sustainable farm designed by the mastermind behind Central Park.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

A giant toy jack made of numerous welded-together fire hydrants.