One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

Curious rock formations in a tiny Kansas state park.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

A wonderful collection of all things Oz is nestled in the heart of Kansas.

A treehouse assailed by the elements and the government, now gone.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Funhouse of found art and participatory sculpture.

An old soap company building now houses one of Minneapolis’s oldest independent non-profit art galleries.

The Art Deco Silver Screen.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The 606 is a decade in the making.

A Museum of Holography frozen in 1974.

The world's largest anatomically accurate brain sculpture.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Commemorating the spot where the famous scientist fed his pigeons.

A semi-scholarly approach to sex.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

Tucked in the back of this amazing antique store is an important piece of medical history.

This is the house that spite built.