Mysterious stone tower featured in many alternative histories of the New World.

Where beautiful signs live on forever.

An adorably sweet display of sculpted Precious Moments figurines.

Like Stonehenge, but with boats and oodles more charm.

This abandoned prison castle has become an imposing gallery of graffiti art.

This charmingly homemade amusement park has been growing for 40 years.

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

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

Jail from the 19th century that was built by inmates.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

An eclectic assortment of medieval architecture in a small Iowa town.

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

Pyramid home to an obscure religious group that practices modern mummification.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

A museum, walk-through diorama, and library nestled under one castle-like roof.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

One woman's Viking Castle on Lake Tahoe.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A castle that was built stone by stone by an eccentric journalist.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

A castle built by an eccentric medieval enthusiast in suburban Ohio.