This historic Victorian hotel has a scandalous history of affairs and murder.

Site of the 1889 murder-suicide of crown prince Rudolf and his lover Mary Vetsera.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

Where a great scandal unfolded with a famous female revivalist at its center.

Perhaps the world's only gas station inspired by a political scandal.

The Home and murder site of the witch of Rehmeyers Hollow.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

The secret skeleton of a murdered nun was discovered in this church basement, but the scandal doesn't end there.

Striking ruins of a mansion that stood center stage in one of modern Brazil's most puzzling crimes.

An art museum with an eclectic design and a scandalous past.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

One part local history, 99 parts gruesome haunted house.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

A small concrete monument remembers a German cold case involving incest, farm tools, and psychics.

Where Aleister Crowley taught magick in "La Chambre Des Cauchemars," his "Chamber of Nightmares."

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

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

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

This seemingly charming home memorializes and honors the victims of a century-old unsolved murder.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Things seem to roll, flow and run uphill on this short patch of road near Ariccia, Italy.