Home to more than 13,000 pieces of war memorabilia and military equipment.

Secret North Korean passage discovered below the world's most dangerous border.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

World War II bunker still standing on the New Jersey beach.

Home to drunken tower-climbing goats... seriously.

Elvis's own personal tropical hideaway.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Giant novelty guitars now mark the spot where Robert Johnson is said to have sold his soul to the devil.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

These lush botanical gardens employ the most purrfect pest control force.

Mysterious rocks that ring musically when struck.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

The boulder on which Alexander Hamilton laid his head after a deadly duel can still be visited on the New Jersey coast.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

This scout retreat, still in use today, was the filming location for the original “Friday the 13th” film.

Step inside Lucy, the world's largest "elephant."

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

Hidden deep within New Jersey Pine Barrens is a massive graffiti wonderland.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.