It's a mystery how these curious columns wound up in an Edinburgh suburb.

The building where Mary, Queen of Scots was said to have bathed in white wine.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A 1920s home transformed into an immersive art experience, where every room is a portal to another realm.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.

The real-life site of Ichabod Crane's infamous gourd attack.

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

One of the last Depression-era bandshells still standing was the site of Elvis Presley’s first live concert.

This demon atop the Notre-Dame de Paris looks utterly bored.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The celebrated eyesore created by starry-eyed sweethearts.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.