An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

Stumps of an Ice Age forest, visible only at low tide.

The mansion home of author Edith Wharton.

The second-largest Jewish temple in Bulgaria was deserted after World War II, seized by the communist government and then abandoned again.

A famed drink seasoned with an amputated toe, now on its tenth digit.

One man is on a singular quest to name an island after a famous hip-hop artist.

Friction between grains of sand cause a curious "singing" sound.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

One man’s hobby is another man’s world of metal wonders.

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

An elaborate, hidden model train in the Needham Town Forest.

This headstone-like marker inscribed with three words has been an utter mystery for over a century.

A historic bridge with a lovely acoustic anomaly.

A steampunk wonderland that preserves America's history of industrial innovation.

The macabre paintings created by famous suicide proponent Jack Kevorkian, or "Dr. Death."

This funeral home had the honor, if that is the correct word, of hosting the funeral of the famous Sacco and Vanzetti.

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

Narrowest house in Boston.

This is the house that spite built.

Located in Faneuil Hall, the headquarters of the Ancient and Honorable Artillery Company of Massachusetts has stood the test of time.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

This Costa Rican topiary park is a surreal garden of unearthly delights.

Disused penal colony features prisoner artwork, some sketched in human blood.