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

A popular European tradition makes its way to the states on one of America's most famous bridges.

The abandoned personal amusement park of the King of Pop.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

America's only nuclear missile silo open to the public.

The final resting place of a space program monolith.

An eccentric inventor's castle home with its own indoor weather system.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

World-famous, Pink's still manages to keep its prized cult fetish status.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

The first home of the doomed aviatrix Amelia Earhart.