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

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

Stroll through a wonderland of stupendous moss-covered trees.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

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

The little-known final resting place of one of America's greatest writers.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

A diorama of the Civil War, fought by cats.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

This natural marble cave is one of only five national monuments in Oregon.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

Canyon walls shrouded in ferns.

The tiny church offers succor to travelers driving by, but only eight at a time.

This Cold War siren is one off the last of its kind still standing with its immensely powerful original horn.

This former coal gasification plant found a curious second life as a popular public park.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

The longest and widest floating bridge in the world.