Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

A strange house built only at night, with rumored mystic inspiration.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

When the Cuban government seized a Trader Vic's franchise, they unknowingly led to its preservation.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

The last street in Pittsburgh that's paved with wood.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

A real flying saucer, contracted by the U.S. Air Force.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Oldest building in California still in use.

Built in 1899, this luxurious home was part of one of the first gated communities in Los Angeles.

The final resting place of a space program monolith, soon to be unveiled again to the public.

America's most famous piece of self-built architecture.

The mounds at this site were reconstructed with the help of archaeologists and historians.

Circleville is seriously smitten with this giant gourd.

Bison, America's national mammal, are staging a slow comeback in Ohio's prairie parkland.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.