The fading, forgotten remains of a once bright and booming factory.

Prehistoric animals decorate this popular outdoor park.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

Free public park and gardens filled with peacocks and peahens.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The largest permanent Monopoly board makes one of the longest games even bigger.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

This painted blacktop brings the classic arcade game to life.

A tribute to Ponce de Leon's supposed quest for eternal youth.

The final resting place of a space program monolith.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

During the holidays, a vintage subway train whisks New Yorkers back in time.

The secret city built by the Manhattan Project.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.