Florida castle built with aluminum printing plates.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

St. Augustine's record-setting narrow street was designed to protect against pirates.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

It's a pretty creepy lock-up.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

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

The only known Futuro house in North Carolina sits along a stretch of desolate highway on the Outer Banks.  .

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

A time capsule of Floridian history fights to survive on the banks of Chokoloskee Bay.

A Circus legend leaves an unexpected endowment.

A vast array of tropical plants collected by a vacationing couple.

The bronze uniforms commemorate the vital role of women during World War II.

The ritual has been performed uninterrupted for nearly 700 years.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

One of England's most famous churches hides a pair of little known architectural treasures.