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

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

Only through the lens of a microscope can visitors see the true treasures inside this museum.

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.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

A lion given to the prime minister somehow got stuffed and sent to Florida.

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

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

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

Ruins of an old sugar mill sitting quietly next to a park in rural Florida.

Meet manatees face-to-face at this zoo for native species.

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

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A building so large that it has its own weather.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

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

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

Visitors to this shop will find fossils, minerals, meteorites, skeletons, oddities, and much more.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

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

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.