Eighteen mummies have stood guard behind the altar of this tiny church since 1833.

Walk through a fairytale in Tuscany.

The astonishing collection of an infamous criminologist.

This abandoned Brutalist treehouse is a hidden architectural relic.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

Crushed coral and crystals give the sand its signature coloration.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

David Sedaris called it "The greatest shop in the world."

These "anatomical machines" are only one of the many strange items in this Italian crypt.

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

A fairy tale castle in modern Rome.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

The oldest operating pharmacy in the world features 800-year-old recipes.

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

Thousands of well-dressed mummies below a monastery.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This First Nations monument is a peaceful spot with vast views of the Calgary prairie.

Canada's oldest railway tunnel is illuminated in a rainbow of color as it passes under the streets of this small city.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

One of the largest cat sanctuaries in North America is considered a "Club Med" for felines.

The oldest landmark of Toronto is a testament to shifting sands.