This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

This woodland architectural installation acts as a camera obscura for the heavens.

Couple's personal collection of pinball machines turned public pinball museum.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Rustic natural hot springs in the deciduous rain forest.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A whimsical village of unique treehouses resides in a Washington forest.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

The scuba diving training facility was named for the steam that rises from the cave's chimney.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

A modernist landscape of water and sci-fi concrete.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

This geothermal hot spring hides beneath a slowly growing mineral dome.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.