An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.

This playground sculpture of an icon from the past is dedicated to the children of the future.

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

Tasked with beautifying a disused stretch of industrial land one artist filled a hole with grass.

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

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

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

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

Site of the greatest known waterfall that ever existed.

A vinyl-lover's Shangri-La.

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

This painted blacktop brings the classic arcade game to life.

This historic building provides a powerful glimpse into the lives of Japanese Americans forced to relocate during World War II.

This medieval village/restaurant perpetually celebrates the year 1376.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

Stroll through a wonderland of stupendous moss-covered trees.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

Music boxes like you've never imagined.

Puzzles within puzzles hide a golden treasure in this hedge maze.

Abstract dinosaur models in London.

The remains of Crystal Palace Great Exhibition of 1851.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.