Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

This haunting monument honors the victims of 9/11.

This 150-year-old train station and caboose have been turned into a railroad museum, enjoyed by young and old alike.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

Dozens upon dozens of boulders engraved with scripture tell the story of one man's troubled life.

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

The only thing these street signs will help you navigate is your imagination.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

This quirky piece of naval artillery has been deafening Canadians for over a century.

A pixel art killer whale is frozen mid-leap in this Vancouver square.

This exaggerated sculpture resembles a well known feature of Vancouver:

This Art Deco masterpiece has stood in for some of the most famous buildings in comic book history.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

One of the few surviving "Wigwam"-themed motels.

Prehistoric animals decorate this popular outdoor park.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

A local scoured more than 1,000 acres for stone to create his masterpiece.

The world's longest known cave system.

A towering, steel behemoth that has graced the skyline of Lakeland, Florida since the early 1980s.

These craggy limestone outcrops offer a glimpse at a unique piece of Florida geology.

The world's largest Holstein cow.

A true roadside icon standing on the same plains that the herds once roamed.