The unedited photograph called "Bliss" has graced the screens of over a billion computers.

One of only two pod-shaped homes designed by Frank Lloyd Wright.

A peaceful, unique botanical garden complete with waterfalls, mini islands, and swans.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

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

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

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

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

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

A sprawling maze of used books piled from floor to ceiling.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

The world's most active stratovolcano is almost always erupting.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Carved faces add a touch of magic to this island's impressive oak trees.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Georgia's first brewery is also one of its oldest surviving buildings.

Where manatees are the snowbird vacationers in these balmy Florida springs.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

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

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.