The quirky gift from West Berlin for the 1968 World's Fair still stands in Hemisfair Park.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

A dam that moonlights as a gigantic, brutalist waterslide.

Alabama’s oldest and largest metaphysical shop.

Between 1930 and 1946, a tobacco farmer laid his beloved horses and mules to rest in this small patch of pine forest.

The replica western town of Shadowhawk was built by a former Hollywood actor in Smithfield, North Carolina.

Abandoned 37.5' diameter rusted metal sphere sitting in the woods.

This centuries-old graveyard is the final resting place of the Fort Fisher Hermit.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

Abandoned outpost once home to a murderous tyrant.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The NBA player's elaborate former home is now a ghost of its old glory.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

The Vatican of the movie industry turned into an actual church.

The home of former Heavyweight Boxing Champion, "Gentleman Jim" Corbett.

The oldest living organism in New York City. Maybe.

A long abandoned hospital building on the outskirts of NYC.

The oldest continuously operating farm in New York State.

This pole near the infield rail at Belmont Park marks the jaw-dropping margin of Secretariat’s 1973 Belmont Stakes victory.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

This museum-within-a-museum pays tribute to "The World's Most Experienced Airline."

All that remains of a magnate's dream home is a historic gate and an abandoned public pool.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.