This professional clown's home is an outsider art wonderland.

An ingenious Dutch land art project uses grass ridges to cut airport noise pollution in half.

One tree's homage to soles past and present.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

This former lieutenant governor's home is brimming with curiosities.

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

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Plenty of old carney magic still haunts this photogenic amusement park.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

The world's oldest bookshop still in operation.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

A Jenga-style cylindrical tower of books that appears to go on forever.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

The reason for the strange contortions in the trunks of these "drunken" pine trees in Russia is still a mystery.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

An abandoned theme park with a strange and tumultuous past.