A black cottonwood gets a second life as a home for books.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

An outsider art duo's yard has been turned into a whimsical public gallery.

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

A cave interior in the shape of the ancient rhinoceros, created by lava cooling around its carcass.

Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

A rapidly disappearing glacier filled with extinct grasshoppers, perfectly preserved in the ice.

Stroll through a wonderland of stupendous moss-covered trees.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

A meditative space out of a fantasy story.

World's largest collection devoted to one fruit.

A couple turned their front yard into an artistic masterpiece.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

A faux European lane smack dab in downtown L.A.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

Shop selling 500 flavors of soda has something for everyone.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."