Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.

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

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

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

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.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This statue is dedicated to Grace Sherwood, the last person in Virginia to be convicted of being a witch.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

One tiny triangular park commemorates the victims of a yellow fever epidemic—many of whom are buried right below the grass.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

There's more contention than one might expect from cherry pie pans.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This shallow cave got its name from copious amount of human bones found inside.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

These boots are made for selfies.

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

The cluster of boulders near Fort Irwin is covered in military insignia.