Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

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

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

For over 300 years this little carving has been the city’s good luck charm.

The storied English village that pretended to be insane inspired NYC's nickname and the fictional namesake in the DC Comics universe.

This monument to the victims of a tragic explosion is said to turn and look at passing cars.

This museum dedicated to divination also honors a local 10th-century prophetess.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

Final resting place of a New Haven urban legend.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

The "possessed" house that inspired "The Haunting in Connecticut" book and movie.

Kitschy horror displays now fill the house where some very real serial killing took place.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

An extensive collection of ancient Egyptian artifacts and mummies.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

Eulogizing an unknown man's unusual demise.

The first tourist attraction to offer tours for interstellar tourists.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

Rumored to have tormented a family in the late 1960s, this toy now resides in a quiet little oddities shop.

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

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.