Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This emotive sculpture was originally created for the 1878 World's Fair.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

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

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

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

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

Nothing says indulgence like a 1,500-pound chocolate castle.

The celebrated eyesore created by starry-eyed sweethearts.