These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This historic railway museum may have lost its passengers but not its love for trains.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

This park is home to a massive bird sanctuary.

The last vessel built by a submarine pioneer stands as a monument to his legacy.

The final resting place of New Orleans' most famous voodoo priestess.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This strange, small castle on the bayou has withstood the test of time and weather.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

An impressive collection of dollhouses and an homage to the frog-leg canning industry.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

Where else would a linchpin of post-colonial Native American cuisine anchor the menu but a museum?

This historical art colony is adorned with thousands of hand-carved concrete sculptures in the Mayan Revival style.

Hundreds of skulls and bones at the largest skeleton museum in the country.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A haunted hill that supposedly defied gravity.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

This impeccably preserved farmstead is a time capsule of a Pulitzer Prize-winning novelist's life.

This general store is stocked with memorabilia from the 1930s onward—almost none of it for sale.

Though illegal, city officials have made an exception for this work of art.

A trek through the solar system here on earth.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.